The Kievan Rus ' state had broken up, replaced by several small warring states.

Some scholars go to the extreme of arguing that, in the unlikely scenario Arabs had occupied what is now Ukraine and Russia, the Rus might never have been able to push south and east from the Baltic to establish Russia.

In 882 his successor Oleg ventured south and conquered Kiev, which had been previously paying tribute to the Khazars, founding Kievan Rus '.

In communist Russia, the ideology of Slavic racial purity led to the complete denial that Scandinavians had played a part in the emergence of the principalities of the Rus ', which was supposed to have been founded by Slavs.

Bolesław I may have deployed his troops in the capital of Rus for no more than six months ( see Kiev Expedition of 1018 ) but had to recall them eventually due to popular uprising against the Poles.

After the death of his father in 972, Vladimir, who was then prince of Novgorod, was forced to flee to Scandinavia in 976 after his brother Yaropolk had murdered his other brother Oleg and conquered Rus.

Władysław supported his brother Švitrigaila as grand duke of Lithuania, but when Švitrigaila, with the support of the Teutonic Order and dissatisfied Rus ' nobles, rebelled against Polish overlordship in Lithuania, the Poles, under the leadership of Bishop Zbigniew Oleśnicki of Kraków, occupied Podolia, which Władysław had awarded to Lithuania in 1411, and Volhynia.

Conrad campaigned unsuccessfully against Poland in 1028 – 1030, but in 1031 in a combined action with the Kievan Rus ' forced King Mieszko II, son and heir of Bolesław I, to make peace and return the land that Bolesław had conquered from the Empire during Henry II's reign.

The invasion, facilitated by the beginning breakup of Kievan Rus ' in the 12th century, had incalculable ramifications for the history of Eastern Europe, including the division of the East Slavic people into three separate nations ( modern day Russia, Ukraine, and Belarus ) and the rise of the Grand Duchy of Moscow.

Here they had their headquarters and held parts of Rus ' in subjection for nearly three centuries.

In the judicial sphere, under Mongol influence capital punishment, which during the times of Kievan Rus had only been applied to slaves, became widespread and the use of torture became a regular part of criminal procedure.

Different earldoms of Rus ' had different dialects of Old East Slavic.

Although the power of the Khazar Khaganate had been broken by the Kievan Rus ' in the 960s, the Byzantines had not been able to fully exploit the power vacuum and restore their dominion over the Crimea and other areas around the Black Sea.

During these years the Byzantines and Bulgarians had entangled themselves in a war with Kievan Rus prince Sviatoslav, who invaded Bulgaria several times.

In 859 he personally besieged Samosata, but in 860 he had to abandon his expedition to repel a Rus ' attack on Constantinople.

Its power increased after the disintegration of Kievan Rus, and although it was not as strong as the veche in Novgorod, the princes had to take its opinion into consideration ; several times in 12th-13th centuries there was an open conflict between them.

It was probably derived from a Germanization ( Brus-berg and Brunsberg ) of the older Prussian name, or possibly named after Saint Bruno of Querfurt, who had been martyred on the Kievan Rus ' border in 1009.

Before that, Nogai's independent actions related to Rus ' princes and foreign merchants had already annoyed the Khan.

Zuckerman posited that the early chronology of the Rus ' had to be re-determined in light of these sources.

In 913 and 944, the Rus ' plundered the Arabs in the Caspian Sea during the Caspian expeditions of the Rus ', but it's not clear whether Igor had anything to do with these campaigns.

In 1125, the Church in the south of Rus had to combat another heresiarch named Dmitri.

In 12th – 13th centuries the city's area was not less that 40 ha, it had various crafts developed and was connected by trading ways with the cities of Northern and Southern Rus '.

The King couldn't escape to Hungary, because during his way he was stopped by Rus ' troops, and King Stephen I wasn't favorable to accepted him in his country.

Kievan Rus subsequently accepted conversion from Constantinople and Byzantine Christianity.

Władysław II Jagiełło, Grand Duke of Lithuania and King of Poland, accepted his supremacy and agreed to pay tribute in turn for a grant of Rus ' territory.

The Berindei nobility were accepted by the elite of the Kiev Rus state, and towns created by them started to flourish.

Berendei nobles were accepted by the elite of Kievan Rus ' on equal terms.

Kievan Rus ' is important for its introduction of a Slavic variant of the Eastern Orthodox religion, dramatically deepening a synthesis of Byzantine and Slavic cultures that defined Russian culture for the next thousand years.

The use and making of icons entered Kievan Rus ' following its conversion to Orthodox Christianity from the Eastern Roman ( Byzantine ) Empire in 988 AD.

* June 7 – Metropolitan Alexy of Leningrad is elected Russian Orthodox Patriarch of Moscow and all the Rus '.

Both the pagans from Aukštalija and the Orthodox Rus ' threatened Gediminas with death if he decides to convert, where a similar scenario also happened to Mindaugas, which he desperately wanted to avoid.

Despite the close relations between Swedish and Russian aristocracy ( see also Rus '), there is no direct evidence of Orthodox influence, possibly because of the language barrier.

* Hilarion of Kiev becomes the first native metropolitan of the Eastern Orthodox Church in Kievan Rus.

A mob killed the Christian Fyodor and his son Ioann ( later, after the overall christening of Kievan Rus, people came to regard these two as the first Christian martyrs in Rus and the Orthodox Church set a day to commemorate them, July 25 ).

The common cultural bond of Eastern Orthodox Christianity and written Church Slavonic ( a literary and liturgical Slavic language developed by 8th century missionaries Saints Cyril and Methodius ) fostered the emergence of a new geopolitical entity, Kievan Rus ' — a loose-knit network of principalities, established along preexisting trade routes, with major centers in Novgorod ( currently Russia ), Polatsk ( in Belarus ) and Kiev ( currently in Ukraine ) — which claimed a sometimes precarious preeminence among them.

Muscovy population was Eastern Orthodox, and used the Greek transcription of Rus, " Rossia ", rather than the Latin " Ruthenia ".

The Orthodox Christian lyrics of these bands often overlap with historical and patriotic songs about ancient Rus.

Several rulers of Kievan Rus – Mikhail of Chernigov and Mikhail of Tver among them – were reportedly assassinated in Sarai, but the Khans were generally tolerant and even released the Russian Orthodox Church from paying taxes.

The Orthodox order survived in present day Slovakia due to its nearness and influence to Kievan Rus ' until the union with Rome was instituted by the Viennese Court.

He provided aid to those in Slovakia and Subcarpathian Rus ' which then were part of Czechoslovakia, and who wanted to return to their ancestral Orthodox faith from the Unia.

The Unions of Brest-Lytovsk ( 1595 ) and of Uzhorod ( 1646 ) were instituted, causing the Byzantine Orthodox Churches of Carpathian and Transcarpathian Rus ' to come under the jurisdiction of Rome, thus establishing so-called " Unia ", or Eastern Catholic churches in the region, the Ruthenian Catholic Church and the Ukrainian Greek Catholic Church.

According to the Primary Chronicle, in the early 11th century, Anthony, an Orthodox monk from Esphigmenon monastery on Mount Athos, originally from Liubech of the Principality of Chernihiv, returned to Rus ' and settled in Kiev as a missionary of monastic tradition to Kievan Rus '.

In the post-medieval period, the name of Little Rus ’ is known to first be used by Eastern Orthodox clergy of the Polish-Lithuanian Commonwealth, for example by influential cleric and writer Ioan Vyshensky ( 1600, 1608 ), Metropolitan Matthew of Kiev and All Rus ’ ( 1606 ), Bishop Ioann ( Biretskoy ) of Peremyshl, Metropolitan Isaiah ( Kopinsky ) of Kiev, Archimandrite Zacharius Kopystensky of Kiev Pechersk Lavra, etc.

The result was " Rus fighting against Rus ," and the splitting of the Church of Rus into Greek Catholic and Greek Orthodox jurisdictions.

Around 800 AD two major empires emerged in the neighborhood: Kievan Rus in present day Ukraine adopted Orthodox Christianity, the Bolgar kingdom located at the confluence of Kama and Volga rivers adopted Islam, and some Moksha areas became tributaries to the latter until the 12th century.

In early 988, Patriarch Photius of Constantinople announced to other Orthodox patriarchs that the Rus ', baptised by his bishop, took to Christianity with particular enthusiasm.