The term Moor is an exonym first used by Christian Europeans to designate the Muslim populations of the Maghreb, al-Andalus, Sicily and Malta during the Middle Ages. Moors are not a single, distinct or self-defined people. The 1911 Encyclopædia Britannica observed that the term had "no real ethnological value." Europeans of the Middle Ages and the early modern period variously applied the name to Arabs, Berbers, and Muslim Europeans.
The Barbary pirates, Barbary corsairs, or Ottoman corsairs were mainly Muslim pirates and privateers who operated from the Barbary states. This area was known in Europe as the Barbary Coast, in reference to the Berbers. Slaves in Barbary could be of many ethnicities, and of many different religions, such as Christian, Jewish, or Muslim. Their predation extended throughout the Mediterranean, south along West Africa's Atlantic seaboard and into the North Atlantic as far north as Iceland, but they primarily operated in the western Mediterranean. In addition to seizing merchant ships, they engaged in razzias, raids on European coastal towns and villages, mainly in Italy, France, Spain, and Portugal, but also in the British Isles, the Netherlands, and Iceland.
Slavery in medieval Europe was widespread. Europe and North Africa were part of a highly interconnected trade network across the Mediterranean Sea, and this included slave trading. During the medieval period (500–1500), wartime captives were commonly forced into slavery. As European kingdoms transitioned to feudal societies, a different legal category of unfree persons -- serfdom -- began to replace slavery as the main economic and agricultural engine. Throughout medieval Europe, the perspectives and societal roles of enslaved peoples differed greatly, from some being restricted to agricultural labor to others being positioned as trusted political advisors.
Oruç Reis was an Ottoman corsair who became Sultan of Algiers. The elder brother of the famous Ottoman admiral Hayreddin Barbarossa, he was born on the Ottoman island of Midilli and died in battle against the Spanish at Tlemcen.
White slavery refers to the slavery of Europeans, whether by non-Europeans, or by other Europeans. Slaves of European origin were present in ancient Rome and in the Islamic world, such as the Arab slave trade, the Barbary slave trade, the Black Sea slave trade and the Ottoman Empire.
Hayreddin Barbarossa, also known as Hayreddin Pasha, Hızır Hayrettin Pasha, and simply Hızır Reis, was an Ottoman corsair and later admiral of the Ottoman Navy. Barbarossa's naval victories secured Ottoman dominance over the Mediterranean during the mid-16th century.
The history of slavery spans many cultures, nationalities, and religions from ancient times to the present day. Likewise, its victims have come from many different ethnicities and religious groups. The social, economic, and legal positions of slaves have differed vastly in different systems of slavery in different times and places.
The history of Islam in Sicily and southern Italy began with the first Arab settlement in Sicily, at Mazara, which was captured in 827. The subsequent rule of Sicily and Malta started in the 10th century. The Emirate of Sicily lasted from 831 until 1061, and controlled the whole island by 902. Though Sicily was the primary Muslim stronghold in Italy, some temporary footholds, the most substantial of which was the port city of Bari, were established on the mainland peninsula, especially in mainland southern Italy, though Muslim raids, mainly those of Muhammad I ibn al-Aghlab, reached as far north as Naples, Rome and the northern region of Piedmont. The Arab raids were part of a larger struggle for power in Italy and Europe, with Christian Byzantine, Frankish, Norman and local Italian forces also competing for control. Arabs were sometimes sought as allies by various Christian factions against other factions.
Slavery has historically been widespread in Africa. Systems of servitude and slavery were common in parts of Africa in ancient times, as they were in much of the rest of the ancient world. When the trans-Saharan slave trade, Red Sea slave trade, Indian Ocean slave trade and Atlantic slave trade began, many of the pre-existing local African slave systems began supplying captives for slave markets outside Africa. Slavery in contemporary Africa is still practised despite it being illegal.
Slavery in the Ottoman Empire was a major institution and a significant part of the Ottoman Empire's economy and traditional society. The main sources of slaves were wars and politically organized enslavement expeditions in the Caucasus, Eastern Europe, Southern Europe, Southeast Europe, and Africa. It has been reported that the selling price of slaves decreased after large military operations. In Constantinople, the administrative and political center of the Ottoman Empire, about a fifth of the 16th- and 17th-century population consisted of slaves. Statistics of these centuries suggest that Istanbul's additional slave imports from the Black Sea slave trade have totaled around 2.5 million from 1453 to 1700.
The Barbary slave trade involved the capture and selling of European slaves at slave markets in the Barbary states. European slaves were captured by African Barbary pirates in slave raids on ships and by raids on coastal towns from Italy to the Netherlands, Ireland and the southwest of Britain, as far north as Iceland and into the Eastern Mediterranean.
Slavery on the Barbary Coast refer to the enslavement of people taken captive by the barbary corsairs in the Barbary Coast area of North Africa.
Slavery in Ethiopia existed for centuries, going as far back as 1495 BC and ending in 1942. There are also sources indicating the export of slaves from the Aksumite Empire. The practice formed an integral part of Ethiopian society. Slaves were traditionally drawn from the Nilotic groups inhabiting Ethiopia's southern hinterland and Oromos. War captives were another source of slaves, though the perception, treatment and duties of these prisoners was markedly different. Although religious law banned Christian slave masters from taking part in the slave trade, many Muslim Ethiopian slave traders took part in the Arab slave trade. Slaves usually served as concubines, bodyguards, servants and treasurers.
Slavery in Spain can be traced to the Phoenician and Roman eras. In the 9th century the Muslim Moorish rulers and local Jewish merchants traded in Spanish and Eastern European Christian slaves. Spain began to trade slaves in the 15th century and this trade reached its peak in the 16th century. The history of Spanish enslavement of Africans began with Portuguese captains Antão Gonçalves and Nuno Tristão in 1441. The first large group of African slaves, made up of 235 slaves, came with Lançarote de Freitas three years later. In 1462, Portuguese slave traders began to operate in Seville, Spain. During the 1470s, Spanish merchants began to trade large numbers of slaves. Slaves were auctioned at market at a cathedral, and subsequently were transported to cities all over Imperial Spain. This led to the spread of Moorish, African, and Christian slavery in Spain. By the 16th century, 7.4 percent of the population in Seville, Spain were slaves. Many historians have concluded that Renaissance and early-modern Spain had the highest amount of African slaves in Europe.
The history of slavery in the Muslim world began with institutions inherited from pre-Islamic Arabia. The practices of keeping slaves in the Muslim world nevertheless developed in radically different ways in different Muslim states based on a range of social-political factors, as well as the more immediate economic and logistical considerations of the Arab slave trade. As a general principle, Islam encouraged the manumission of Muslim slaves as a way of expiating sins, and many early converts to Islam, such as Bilal, were former slaves. However, Islam never banned the practice, and it persisted as an important institution in the Muslim world through to the modern era.
Concubinage in the Muslim world was the practice of Muslim men entering into intimate relationships without marriage, with enslaved women, though in rare, exceptional cases, sometimes with free women. If the concubine gave birth to a child, she attained a higher status known as umm al-walad.
The Trans-Saharan slave trade, also known as the Arab slave trade, was a slave trade in which slaves were mainly transported across the Sahara. Most were moved from sub-Saharan Africa to North Africa to be sold to Mediterranean and Middle Eastern civilizations; a small percentage went the other direction. Estimates of the total number of black slaves moved from sub-Saharan Africa to the Arab world range from 6-10 million, and the trans-Saharan trade routes conveyed a significant number of this total, with one estimate tallying around 7.2 million slaves crossing the Sahara from the mid-7th century until the 20th century when it was abolished. The Arabs managed and operated the trans-Saharan slave trade, although Berbers were also actively involved. Alongside Black Africans, Turks, Iranians, Europeans and Berbers were among the people traded by the Arabs, with the trade being practised throughout the Arab world, primarily in Western Asia, North Africa, East Africa, and Europe.
Slavery existed in Morocco since antiquity. Morocco was a center of the Trans-Saharan slave trade route of enslaved Black Africans from sub-Saharan Africa, as well as a center of the slave trade of Barbary slave trade of Europeans captured by the barbary pirates. The slave trade was suppressed in Morocco in the 1920s.
The sack of Vieste was led by Dragut and took place on the 15th of July in 1554. This sack resulted in the capture of the fortress, a massacre and the enslavement of thousands.
Slavery is noted in the area later known as Algeria since antiquity. Algeria was a center of the Trans-Saharan slave trade route of enslaved Black Africans from sub-Saharan Africa, as well as a center of the slave trade of Barbary slave trade of Europeans captured by the barbary pirates.
Kingdom of Naples 
Regency of Algiers