1890 British Ultimatum

Last updated
The Pink Map: areas in Africa claimed by Portugal before the Ultimatum. Mapa Cor-de-Rosa.svg
The Pink Map: areas in Africa claimed by Portugal before the Ultimatum.

The 1890 British Ultimatum was an ultimatum by the British government delivered on 11 January 1890 to the Kingdom of Portugal. Portugal had attempted to claim a large area of land between its colonies of Mozambique and Angola including most of present-day Zimbabwe and Zambia and a large part of Malawi, which had been included in Portugal's "Rose-coloured Map". [1] The ultimatum led to the withdrawal of Portuguese forces from areas which had been claimed by Portugal on the basis of Portuguese exploration in the era, but which Britain claimed on the basis of uti possidetis .

Contents

It has sometimes been claimed that the British government's objections arose because the Portuguese claims clashed with its aspirations to create a Cape to Cairo Railway, linking its colonies from the south of Africa to those in the north. This seems unlikely, as in 1890 Germany already controlled German East Africa, now Tanzania, and Sudan was independent under Muhammad Ahmad. Rather, the British government was pressed into taking action by Cecil Rhodes, whose British South Africa Company was founded in 1888 south of the Zambezi and the African Lakes Company and British missionaries to the north. [2]

Map showing incomplete British control of the Cape to Cairo route, 1913.
.mw-parser-output .legend{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .legend-color{display:inline-block;min-width:1.25em;height:1.25em;line-height:1.25;margin:1px 0;text-align:center;border:1px solid black;background-color:transparent;color:black}.mw-parser-output .legend-text{}
British colonies
Portuguese colonies Colonial Africa 1913 map.svg
Map showing incomplete British control of the Cape to Cairo route, 1913.
  British colonies
  Portuguese colonies

Background

At the start of the 19th century, the Portuguese presence in Africa south of the equator was limited in Angola to Luanda and Benguela and a few outposts, the most northerly of which was Ambriz and in Mozambique to the Island of Mozambique, several other coastal trading posts as far south as Delagoa Bay and the virtually independent Prazo estates in the Zambezi valley [3] The first challenge to Portugal's wider claims came from the Transvaal Republic, which in 1868 claimed an outlet to the Indian Ocean at Delagoa Bay. Although in 1869, Portugal and the Transvaal reached agreement on a border under which all of Delagoa Bay was Portuguese, the UK then lodged an objection, claiming the southern part of that bay. The claim was rejected after arbitration by President MacMahon of France. His award made in 1875 upheld the border agreed in 1869. A second challenge came from the foundation of a German colony at Angra Pequena, now known as Lüderitz in Namibia in 1883. Although there was no Portuguese presence there, Portugal had claimed it on the basis of discovery. [4]

A far more serious dispute arose in the area of the Zambezi valley and Lake Nyasa. Portugal occupied the coast of Mozambique from the 16th century, and from 1853 the Portuguese government embarked on a series of military campaigns to bring the Zambezi valley under its effective control. [5] During the 1850s, the areas south of Lake Nyasa (now Lake Malawi) and west of the lake were explored by David Livingstone and several Church of England and Presbyterian missions were established in the Shire Highlands in the 1860s and 1870s. In 1878, the African Lakes Company was established by businessmen with links to the Presbyterian missions. Their aim was to set up a trading company that would work in close cooperation with the missions to combat the slave trade by introducing legitimate trade and develop European influence in the area. A small mission and trading settlement was established at Blantyre in 1876. [6]

Portugal attempted to assert its African territorial claims through three expeditions led by Alexandre de Serpa Pinto, first from Mozambique to the eastern Zambezi in 1869, then to the Congo and upper Zambezi from Angola in 1876 and lastly crossing Africa from Angola in 1877–1879. These expeditions were undertaken with the intention of claiming the area between Mozambique and Angola. [7] Following Serpa Pinto's explorations, the Portuguese government in 1879 made a formal claim to the area south and east of the Ruo River (the present south-eastern border of Malawi) and, in 1882, occupied the lower Shire River valley as far as the Ruo. The Portuguese then asked the British government to accept this territorial claim, but the opening of the Berlin Conference of 1884–85 ended the discussions. [8] Portugal's efforts to establish this corridor of influence between Angola and Mozambique were hampered by one of the articles in the General Act of the Berlin Conference which required uti possidetis of areas claimed rather than historical claims based on discovery or those based on exploration, as Portugal had used. [9]

To validate Portuguese claims, Serpa Pinto was appointed as its consul in Zanzibar in 1884 and given the mission of exploring the region between Lake Nyasa and the coast from the Zambezi to the Rovuma River and securing the allegiance of the chiefs in that area. [10] His expedition reached Lake Nyasa and the Shire Highlands but failed to make any treaties of protection with the chiefs in territories west of the lake. [11] At the northwest end of Lake Nyasa around Karonga, the African Lakes Company made, or claimed to have made, treaties with local chiefs between 1884 and 1886. Its ambition was to become a chartered company and control the route from the lake along the Shire River. [12]

Despite the outcome of the Berlin Conference, the idea of a trans-African Portuguese zone was not abandoned; to help to create it, Portugal signed treaties with France and Germany in 1886. The German treaty noted Portugal's claim to territory along the course of the Zambezi linking Angola and Mozambique. Following the treaties, the Portuguese foreign minister prepared what became known as the Rose Coloured Map, representing a claim stretching from the Atlantic to the Indian Ocean. [9] North of the Zambezi, these Portuguese claims were opposed by both the African Lakes company and the missionaries. The main opposition to Portuguese claims in the south came from Cecil Rhodes, whose British South Africa Company was founded in 1888. [13] As late as 1888, the British Foreign Office declined to offer protection to the tiny British settlements in the Shire Highlands. However, it did not accept the expansion of Portuguese influence there, and in 1889, it appointed Henry Hamilton Johnston as British consul to Mozambique and the Interior, and instructed him to report on the extent of Portuguese rule in the Zambezi and Shire valleys. He was also to make conditional treaties with local rulers outside Portuguese control. The conditional treaties did not establish a British protectorate but prevented the rulers from accepting protection from another state. [14]

Ultimatum

In 1888, the Portuguese government instructed its representatives in Mozambique to make treaties of protection with the Yao chiefs southeast of Lake Nyasa and in the Shire Highlands. Two expeditions were organised, one under Antonio Cardoso, a former governor of Quelimane, set off in November 1888 for Lake Nyasa; the second expedition under Serpa Pinto (now governor of Mozambique) moved up the Shire valley. Between them, these two expeditions made over 20 treaties with chiefs in what is now Malawi. [15] Serpa Pinto met Johnston in August 1889 east of the Ruo, when Johnston advised him not to cross the river into the Shire Highlands. [16] Although Serpa Pinto had previously acted with caution, he crossed the Ruo to Chiromo, now in Malawi in September 1889. [17]

The incursion led to an armed conflict between Portuguese troops led by Serpa Pinto and the Makololo on 8 November 1889 near the Shire river. [18]

Following this minor clash, Johnston's vice-consul, John Buchanan, accused Portugal of ignoring British interests in this area and declared a British protectorate over the Shire Highlands in December 1889 despite contrary instructions. [19] Shortly afterward, Johnston himself declared a further protectorate over the area to the west of Lake Nyasa (also contrary to his instructions) although both protectorates were later endorsed by the Foreign Office. [20]

The actions formed the background to an Anglo-Portuguese crisis in which a British refusal of arbitration was followed by the 1890 British Ultimatum. [21]

The ultimatum was a memorandum sent to the Portuguese Government by Lord Salisbury on 11 January 1890 in which he demanded the withdrawal of the Portuguese troops from Mashonaland and Matabeleland (now Zimbabwe) and the Shire-Nyasa region (now Malawi), where Portuguese and British interests in Africa overlapped. It meant that the UK was now claiming sovereignty over territories, some of which had been claimed as Portuguese for centuries. [22]

What Her Majesty's Government require and insist upon is the following: that telegraphic instructions shall be sent to the governor of Mozambique at once to the effect that all and any Portuguese military forces which are actually on the Shire or in the Makololo or in the Mashona territory are to be withdrawn. Her Majesty's Government considers that without this the assurances given by the Portuguese Government are illusory. Mr. Petre is compelled by his instruction to leave Lisbon at once with all the members of his legation unless a satisfactory answer to this foregoing intimation is received by him in, the course of this evening, and Her Majesty's ship Enchantress is now at Vigo waiting for his orders. [23]

The Mr. Petre mentioned was the British Minister in Lisbon. [23]

Aftermath

Although the ultimatum required Portugal to cease from its activities in the disputed areas, there was no similar restriction on further British efforts to establish occupation there. Agents for Rhodes were active in Mashonaland and Manicaland and in what is now eastern Zambia, and John Buchanan asserted British rule in more of the Shire Highlands. There were armed clashes between Portuguese troops who were already in occupation in Manicaland and Rhodes’ incoming men in 1890 and 1891, which ceased only when some areas that had been allocated to Portugal in the unratified 1890 treaty were reassigned to Rhodes’ British South Africa Company in the 1891 treaty, with Portugal being given more land in the Zambezi valley in compensation for this loss. [24]

The seeming ease by which the Portuguese government had acquiesced to the British demands was seen as a national humiliation by many in Portugal, including republican opponents of Portugal's monarchy. Portuguese anger over the ultimatum led to the fall of Prime Minister José Luciano de Castro's administration and its replacement by a new administration led by António de Serpa Pimentel. Combined with a variety of other factors, such as the Portuguese royal family's expenses, the Lisbon Regicide, political instability and changing religious and social views in Portugal led to the 5 October 1910 revolution, which overthrew the Portuguese monarchy. [25] The reason that Lord Salisbury and his diplomatically isolated British government used tactics that could have led to war has been plausibly argued as the result of fear of Portuguese occupation of Manicaland and the Shire Highlands, which would have forestalled British interests. [26]

In an attempt to reach an agreement over Portuguese African borders, the Treaty of London defining the territorial limits of Angola and Mozambique, was signed on 20 August 1890 by Portugal and the United Kingdom. The treaty was published in the Diário do Governo (Portugal's Government Daily) on 30 August and presented to the parliament that same day, leading to a new wave of protests and the downfall of the Portuguese government. Not only was it never ratified by the Portuguese Parliament; but Cecil Rhodes, whose plans of expansion it affected, also opposed this treaty. A new treaty was negotiated which gave Portugal more territory in the Zambezi valley than the 1890 treaty, but what is now the Manicaland Province of Zimbabwe passed from Portuguese to British control. This treaty was signed in Lisbon on 11 June 1891, and in addition to defining boundaries, it allowed freedom of navigation on the Zambezi and Shire rivers and allowed the UK to lease land for a port at Chinde at the mouth of the Zambezi. [27]

The 1890 ultimatum soured Anglo-Portuguese relations for some time, although when in the late 1890s Portugal underwent a severe economic crisis, its government sought a British loan. However, with the outbreak of the Boer war, Britain sought support from Portugal and signed an Anglo-Portuguese Declaration on 14 October 1899. This new treaty reaffirmed former treaties of Alliance and committed Britain to defending Portuguese colonies from possible enemies. In return, Portugal agreed to stop arms being supplied to the Transvaal through Lourenço Marques and declared its neutrality in the conflict. [28]

Although official relations were repaired, the 1890 ultimatum was said to be one of the main causes of the failed 31 January 1891 revolt by republicans in Porto and, eventually, the successful 5 October 1910 revolution, which ended the monarchy in Portugal 20 years later, around three years after the assassination of the Portuguese king (Carlos I of Portugal) and the crown prince on 1 February 1908.

See also

Related Research Articles

Chinde is a town of Mozambique, and a port for the Zambezi valley. It is located on the Chinde River, and is an important fishing center. It exports copra and sugar, and had a population of 16,500 in 1980. Chinde lies in Chinde District of Zambezia Province.

<span class="mw-page-title-main">Nyasaland</span> British protectorate from 1907 to 1964

Nyasaland was a British protectorate located in Africa that was established in 1907 when the former British Central Africa Protectorate changed its name. Between 1953 and 1963, Nyasaland was part of the Federation of Rhodesia and Nyasaland. After the Federation was dissolved, Nyasaland became independent from Britain on 6 July 1964 and was renamed Malawi.

<span class="mw-page-title-main">British Central Africa Protectorate</span> British protectorate from 1893 to 1907

The British Central Africa Protectorate (BCA) was a British protectorate proclaimed in 1889 and ratified in 1891 that occupied the same area as present-day Malawi: it was renamed Nyasaland in 1907. British interest in the area arose from visits made by David Livingstone from 1858 onward during his exploration of the Zambezi area. This encouraged missionary activity that started in the 1860s, undertaken by the Universities' Mission to Central Africa, the Church of Scotland and the Free Church of Scotland, and which was followed by a small number of settlers. The Portuguese government attempted to claim much of the area in which the missionaries and settlers operated, but this was disputed by the British government. To forestall a Portuguese expedition claiming effective occupation, a protectorate was proclaimed, first over the south of this area, then over the whole of it in 1889. After negotiations with the Portuguese and German governments on its boundaries, the protectorate was formally ratified by the British government in May 1891.

<span class="mw-page-title-main">Harry Johnston</span> British explorer (1858–1927)

Sir Henry Hamilton Johnston was a British explorer, botanist, artist, colonial administrator, and linguist who travelled widely across Africa to speak some of the languages spoken by people on that continent. He published 40 books on subjects related to the continent of Africa and was one of the key players in the Scramble for Africa that occurred at the end of the 19th century.

<span class="mw-page-title-main">British South Africa Company</span> 1889–1965 British mining and colonial enterprises company

The British South Africa Company was chartered in 1889 following the amalgamation of Cecil Rhodes' Central Search Association and the London-based Exploring Company Ltd, which had originally competed to capitalize on the expected mineral wealth of Mashonaland but united because of common economic interests and to secure British government backing. The company received a Royal Charter modelled on that of the British East India Company. Its first directors included The 2nd Duke of Abercorn, Rhodes himself, and the South African financier Alfred Beit. Rhodes hoped BSAC would promote colonisation and economic exploitation across much of south-central Africa, as part of the "Scramble for Africa". However, his main focus was south of the Zambezi, in Mashonaland and the coastal areas to its east, from which he believed the Portuguese could be removed by payment or force, and in the Transvaal, which he hoped would return to British control.

The African Lakes Corporation plc was a British company originally set-up in 1877 by Scottish businessmen to co-operate with Presbyterian missions in what is now Malawi. Despite its original connections with the Free Church of Scotland, it operated its businesses in Africa on a commercial rather than a philanthropic basis. It had political ambitions in the 1880s to control part of Central Africa and engaged in armed conflict with Swahili traders. Its businesses in the colonial era included water transport on the lakes and rivers of Central Africa, wholesale and retail trading including the operation of general stores, labour recruitment, landowning and later an automotive business. The company later diversified, but suffered an economic decline in the 1990s and was liquidated in 2007. One of the last directors of the company kindly bought the records of the company and donated them to Glasgow University Archive Services, where they are still available for research.

<span class="mw-page-title-main">Alexandre de Serpa Pinto</span> Portuguese explorer and soldier (1846–1900)

Alexandre Alberto da Rocha de Serpa Pinto, Viscount of Serpa Pinto was a Portuguese explorer of southern Africa and a colonial administrator.

<span class="mw-page-title-main">Hermenegildo Capelo</span> Portuguese Naval officer and explorer (1841–1917)

Hermenegildo de Brito Capelo (1841–1917) was a Portuguese officer in the Portuguese Navy and an explorer, who helped to chart territory between Angola and Mozambique that was unknown to Europeans in the 1870s and 1880s. Alongside Roberto Ivens, he is famous for being the first European to cross Central Africa from coast to coast between Angola and Mozambique.

<span class="mw-page-title-main">Pink Map</span> 1885 Portuguese diplomatic document

The Pink Map, also known in English as the Rose-Coloured Map, was a map prepared in 1885 to represent Portugal's claim of sovereignty over a land corridor connecting their colonies of Angola and Mozambique during the Scramble for Africa. The area claimed included most of what is currently Zimbabwe and large parts of modern Zambia and Malawi. In the first half of the 19th century, Portugal fully controlled only a few coastal towns in Angola and Mozambique. It also claimed suzerainty over other almost independent towns and nominally Portuguese subjects in the Zambezi valley, but could rarely enforce its claims; most of the territory now within Angola and Mozambique was entirely independent of Portuguese control. Between 1840 and 1869, Portugal expanded the area it controlled but felt threatened by the activities of other powers.

<span class="mw-page-title-main">Alfred Sharpe</span>

Sir Alfred Sharpe was Commissioner and Consul-General for the British Central Africa Protectorate and first Governor of Nyasaland.

Eugene Charles Albert Sharrer was a British subject by naturalisation but of German descent, who was a leading entrepreneur in what is now Malawi for around fifteen years between his arrival in 1888 and his departure. He rapidly built-up commercial operations including wholesale and retail trading, considerable holdings of land, cotton and coffee plantations and a fleet of steamers on the Zambezi and Shire rivers. Sharrer was prominent in pressure groups that represented the interests of European planters and their businesses to the colonial authorities, and was responsible for the development of the first railway in what had become the British Central Africa Protectorate, whose construction was agreed in 1902. In 1902, Sharrer consolidate all his business interests into the British Central Africa Company Ltd and became its principal shareholder Shortly after this he left British Central Africa permanently for London, although he retained his financial interests in the territory. Very little is known of his history before he arrived in Central Africa but he died in London during the First World War.

The Anglo-Portuguese Treaty of 1891 was an agreement between the United Kingdom and Portugal which fixed the boundaries between the British Central Africa Protectorate, and the territories administered by the British South Africa Company in Mashonaland and Matabeleland and North-Western Rhodesia and Portuguese Mozambique, and also between the British South Africa Company administered territories of North-Eastern Rhodesia, and Portuguese Angola.

John Buchanan (1855–1896), was a Scottish horticulturist who went to Central Africa, now Malawi, in 1876 as a lay member of the missionary party that established Blantyre Mission. Buchanan came to Central Africa as an ambitious artisan: his character was described as dour and devout but also as restlessly ambitious, and he saw in Central Africa a gateway to personal achievement. He started a mission farm on the site of Zomba, Malawi but was dismissed from the mission in 1881 for brutality. From being a disgraced missionary, Buchanan first became a very influential planter owning, with his brothers, extensive estates in Zomba District. He then achieved the highest position he could in the British administration as Acting British Consul to Central Africa from 1887 to 1891. In that capacity declared a protectorate over the Shire Highlands in 1889 to pre-empt a Portuguese expedition that intended to claim sovereignty over that region. In 1891, the Shire Highlands became part of the British Central Africa Protectorate. John Buchanan died at Chinde in Mozambique in March 1896 on his way to visit Scotland, and his estates were later acquired by the Blantyre and East Africa Ltd.

<span class="mw-page-title-main">History of rail transport in Malawi</span>

The history of rail transport in Malawi began shortly after the turn of the twentieth century.

<span class="mw-page-title-main">Shire Highlands Railway Company</span>

The Shire Highlands Railway Company Ltd was a private railway company in colonial Nyasaland, incorporated in 1895 with the intention of constructing a railway from Blantyre to the effective head of navigation of the Shire River. After problems with routing and finance, a South African 3 ft 6 in gauge railway was constructed between 1903 and 1907, and extended in 1908 to a Nsanje, a distance of 113 miles (182 km) as water levels in the Shire River fell.

The Treaty of Windsor was a secret colonial declaration between the United Kingdom and Portugal in 1899. It was named after the earlier Treaty of Windsor (1386) though actually signed in London on 14 October 1899 by the British Prime Minister Lord Salisbury and the Portuguese ambassador Soveral.

The M'Bona Cult is a system of religious beliefs and rituals which is currently restricted to the most southerly parts of Malawi, but which probably extended more widely, both in other parts of Malawi and adjacent parts of Mozambique. The cult is found mainly among the local Mang'anja people and its former extent reflected that people's wider past distribution. It aims to secure abundant rains at the appropriate season through the making of propitiatory gifts at cult shrines, and includes rainmaking rituals in the event of drought. It has been related to a number of other territorial cults among the Maravi cluster of related African peoples which aim to secure the well-being of the people of a particular area secure from drought, floods or food shortages. The cult is believed to be a long established one, although estimates of how long it has existed are speculative, as the earliest definite record of its existence dates from 1862.

Chikunda, sometimes rendered as Achicunda, was the name given from the 18th century onwards to the slave-warriors of the Afro-Portuguese estates known as Prazos in Zambezia, Mozambique. They were used to defend the prazos and police their inhabitants. Many of the chikunda were originally chattel slaves, raised to the status of soldiers, traders or administrators of parts of the prazo as a client or unfree dependent.

The Makololo chiefs recognised by the governments of colonial Nyasaland and independent Malawi have their origin in a group of porters that David Livingstone brought from Barotseland in the 1850s to support his first Zambezi expedition that did not return to Barotseland but assisted Livingstone and British missionaries in the area of southern Malawi between 1859 and 1864. After the withdrawal of the Universities' Mission to Central Africa those Makololo remaining in the Shire valley used firearms provided by the Europeans to attract dependants seeking protection, to seize land and to establish a number of chieftainships. At the time that a British protectorate was established in 1891, there were seven Makololo chiefs of which six were recognised by the government. Five survived to be given local governmental powers in 1933, and these powers continued after Malawi became independent. Although called Makololo or Kololo, after the ruling group in Barotseland in the 1850s, the majority came from peoples subject to the Makololo who adopted the more prestigious name. As, regardless of their origin, they took wives from among the inhabitants of the Shire Valley, their modern descendants have little connection with the Kololo people apart from their name.

References

  1. Livermore, H.V. (1997). "Lord Salisbury's Ultimatum". British Historical Society of Portugal Annual Report. 24: 151.
  2. M Newitt, (1995). A History of Mozambique, London, Hurst & Co, p. 341. ISBN   1-85065-172-8.
  3. R Oliver and A Atmore (1986). The African Middle Ages, 1400–1800, Cambridge University Press pp. 163–164, 191, 195. ISBN   0-521-29894-6.
  4. H. Livermore (1992), Consul Crawfurd and the Anglo-Portuguese Crisis of 1890 Portuguese Studies, Vol. 8, pp. 181–2.
  5. M Newitt (1969). "The Portuguese on the Zambezi: An Historical Interpretation of the Prazo system", Journal of African History Vol. X, No. 1 pp. 67–68, 80–82. JSTOR   180296.
  6. J G Pike (1969). Malawi: A Political and Economic History, London, Pall Mall Press pp. 77–79.
  7. C E Nowell (March 1947). "Portugal and the Partition of Africa", The Journal of Modern History, Vol. 19, No. 1, pp. 6–8. JSTOR   1875649.
  8. J McCracken (2012). A History of Malawi, 1859–1966, Woodbridge, James Currey, p. 51. ISBN   978-1-84701-050-6.
  9. 1 2 Teresa Pinto Coelho (2006). "Lord Salisbury's 1890 Ultimatum to Portugal and Anglo-Portuguese Relations", p. 2.
  10. C E Nowell (March 1947). "Portugal and the Partition of Africa", The Journal of Modern History, Vol. 19, No. 1, p. 10. JSTOR   1875649.
  11. M Newitt (1995). A History of Mozambique, pp. 276–277, 325–326.
  12. J McCracken (2012). A History of Malawi, 1859–1966, Woodbridge, James Currey, pp. 48–52. ISBN   978-1-84701-050-6.
  13. M Newitt (1995). A History of Mozambique, p. 341.
  14. J G Pike (1969). Malawi: A Political and Economic History, pp. 83–85.
  15. J McCracken, (2012). A History of Malawi, 1859-1966, pp. 52-3.
  16. J G Pike, (1969). Malawi: A Political and Economic History, pp. 85-6.
  17. J McCracken, (2012). A History of Malawi, 1859-1966, pp. 53, 55.
  18. Teresa Pinto Coelho, (2006). Lord Salisbury's 1890 Ultimatum to Portugal and Anglo-Portuguese Relations, p. 3. http://www.mod-langs.ox.ac.uk/files/windsor/6_pintocoelho.pdf
  19. M Newitt, (1995). A History of Mozambique, p. 346.
  20. R I Rotberg, (1965). The Rise of Nationalism in Central Africa: The Making of Malawi and Zambia, 1873-1964, Cambridge (Mass), Harvard University Press, p.15.
  21. F Axelson, (1967). Portugal and the Scramble for Africa, Johannesburg, Witwatersrand University Press, pp. 233-6.
  22. Teresa Pinto Coelho, (2006). Lord Salisbury's 1890 Ultimatum to Portugal and Anglo-Portuguese Relations, p. 1. http://www.mod-langs.ox.ac.uk/files/windsor/6_pintocoelho.pdf
  23. 1 2 Teresa Pinto Coelho, (2006). Lord Salisbury's 1890 Ultimatum to Portugal and Anglo-Portuguese Relations, p. 1. http://www.mod-langs.ox.ac.uk/files/windsor/6_pintocoelho.pdf
  24. M Newitt, (1995). A History of Mozambique, pp. 353-4.
  25. João Ferreira Duarte, The Politics of Non-Translation: A Case Study in Anglo-Portuguese Relations
  26. M Newitt, (1995). A History of Mozambique, p. 347.
  27. Teresa Pinto Coelho, (2006). Lord Salisbury's 1890 Ultimatum to Portugal and Anglo-Portuguese Relations, pp. 6-7. http://www.mod-langs.ox.ac.uk/files/windsor/6_pintocoelho.pdf
  28. Teresa Pinto Coelho, (2006). Lord Salisbury's 1890 Ultimatum to Portugal and Anglo-Portuguese Relations, pp. 6-7. http://www.mod-langs.ox.ac.uk/files/windsor/6_pintocoelho.pdf

Further reading