The Slavs or Slavic people are groups of people who speak Slavic languages. Slavs are geographically distributed throughout the northern parts of Eurasia; they predominantly inhabit Central Europe, Eastern Europe, Southeastern Europe, and Northern Asia, though there is a large Slavic minority scattered across the Baltic states and Central Asia, and a substantial Slavic diaspora in the Americas, Western Europe, and Northern Europe.
The East Slavs are the most populous subgroup of the Slavs. They speak the East Slavic languages, and formed the majority of the population of the medieval state Kievan Rus', which they claim as their cultural ancestor. Today Belarusians, Russians and Ukrainians are the existent East Slavic nations. Rusyns can also be considered as a separate nation, although they are often considered a subgroup of the Ukrainian people.
The Mongol Empire invaded and conquered much of Kievan Rus' in the mid-13th century, sacking numerous cities such as Ryazan, Yaroslavl, Pereyaslavl and Vladimir, including the largest: Kiev and Chernigov. The siege of Kiev in 1240 by the Mongols is generally held to mark the end of the state of Kievan Rus', which had already been undergoing fragmentation. Many other principalities and urban centres in the northwest and southwest escaped complete destruction or suffered little to no damage from the Mongol invasion, including Galicia–Volhynia, Pskov, Smolensk, Polotsk, Vitebsk, and probably Rostov and Uglich.
The Volga is the longest river in Europe and the longest endorheic basin river in the world. Situated in Russia, it flows through Central Russia to Southern Russia and into the Caspian Sea. The Volga has a length of 3,531 km (2,194 mi), and a catchment area of 1,360,000 km2 (530,000 sq mi). It is also Europe's largest river in terms of average discharge at delta – between 8,000 m3/s (280,000 cu ft/s) and 8,500 m3/s (300,000 cu ft/s) – and of drainage basin. It is widely regarded as the national river of Russia. The hypothetical old Russian state, the Rus' Khaganate, arose along the Volga c. 830 AD. Historically, the river served as an important meeting place of various Eurasian civilizations.
The Principality of Suzdal, from 1157 the Grand Principality of Vladimir, also known as Vladimir-Suzdal, or simply Suzdalia, was a medieval principality that was established during the disintegration of Kievan Rus'. In historiography, the territory of the grand principality and the principalities that emerged from it is commonly denoted as north-east Russia or north-east Rus'.
Volga Bulgaria or Volga–Kama Bulgaria was a historical Bulgar state that existed between the 9th and 13th centuries around the confluence of the Volga and Kama River, in what is now European Russia. Volga Bulgaria was a multi-ethnic state with large numbers of Bulgars, Finno-Ugrians, Varangians, and East Slavs. Its strategic position allowed it to create a local trade monopoly with Norse, Cumans, and Pannonian Avars.
The Christianization of Kievan Rus' was a long and complicated process that took place in several stages. In 867, Patriarch Photius of Constantinople told other Christian patriarchs that the Rus' people were converting enthusiastically, but his efforts seem to have entailed no lasting consequences, since the Russian Primary Chronicle and other Slavonic sources describe the tenth-century Rus' as still firmly entrenched in Slavic paganism. The traditional view, as recorded in the Russian Primary Chronicle, is that the definitive Christianization of Kievan Rus' dates happened c. 988, when Vladimir the Great was baptized in Chersonesus (Korsun) and proceeded to baptize his family and people in Kiev. The latter events are traditionally referred to as baptism of Rus' in Russian, Ukrainian and Belarusian literature.
The Pechenegs or Patzinaks were a semi-nomadic Turkic people from Central Asia who spoke the Pecheneg language. In the 9th and 10th centuries, the Pechenegs controlled much of the steppes of southeast Europe and the Crimean Peninsula. In the 9th century the Pechenegs began a period of wars against Kievan Rus', and for more than two centuries launched raids into the lands of Rus', which sometimes escalated into full-scale wars.
Chud or Chude is a term historically applied in the early East Slavic annals to several Baltic Finnic peoples in the area of what is now Estonia, Karelia and Northwestern Russia. It has also been used to refer to other Finno-Ugric peoples.
Severia or Siveria is a historical region in present-day southwest Russia, northern Ukraine, and eastern Belarus. The largest part lies in modern Russia, while the central part of the region is the city of Chernihiv in Ukraine.
The Volhynians were an East Slavic tribe of the Early Middle Ages and the Principality of Volhynia in 987–1199.
The architecture of Kievan Rus' comes from the medieval state of Kievan Rus' which incorporated parts of what is now modern Ukraine, Russia, and Belarus, and was centered on Kiev and Novgorod. Its architecture is the earliest period of Russian and Ukrainian architecture, using the foundations of Byzantine culture but with great use of innovations and architectural features. Most remains are Russian Orthodox churches or parts of the gates and fortifications of cities.
The history of Ukrainian nationality can be traced back to the kingdom of Kievan Rus' of the 9th to 12th centuries. It was the predecessor state to what would eventually become the Eastern Slavic nations of Belarus, Russia, and Ukraine. During this time, Eastern Orthodoxy, a defining feature of Ukrainian nationalism, was incorporated into everyday life.
The Rus', also known as Russes, were a people in early medieval Eastern Europe. The scholarly consensus holds that they were originally Norsemen, mainly originating from present-day Sweden, who settled and ruled along the river-routes between the Baltic and the Black Seas from around the 8th to 11th centuries AD.
The word Rus' referred initially to a group of Scandinavian Vikings, also known as Varangians, who founded the medieval state of Kievan Rus' in Eastern Europe in the 10th century. The term gradually acquired the meaning of the aforementioned dynastic polity itself, and also the geographic region of its heartlands Kiev, Pereiaslavl' and Chernihiv. Russia is a Hellenized rendition of the same word, and Ruthenia is its Latinized form.
Rus' Khaganate, or kaganate of Rus is a name applied by some modern historians to a hypothetical polity suggested to have existed during a poorly documented period in the history of Eastern Europe between c. 830 and the 890s.
Kievan Rus', also known as Kyivan Rus', was the first East Slavic state and later an amalgam of principalities in Eastern Europe from the late 9th to the mid-13th century. Encompassing a variety of polities and peoples, including East Slavic, Norse, and Finnic, it was ruled by the Rurik dynasty, founded by the Varangian prince Rurik. The name was coined by Russian historians in the 19th century to describe the period when Kiev was at the center. At its greatest extent in the mid-11th century, Kievan Rus' stretched from the White Sea in the north to the Black Sea in the south and from the headwaters of the Vistula in the west to the Taman Peninsula in the east, uniting the East Slavic tribes.
According to some historians, the Old Russian people were a unified ethnic group that emerged from East Slavic tribes of the Kievan Rus. The foundations for this theory were laid by Sergei Tokarev and further developed by Boris Rybakov and Pyotr Tretyakov. However, this theory is controversial among historians.
$3.275 trillion [2] 
