The correct answer is converted to christian orthodox.
In 988 Vladimir prince of Kiev converted to christian orthodox in order to help to unify people.
The father of Vladimir was a prince in Rurik dynasty. Vladimir took over after the death of his father in 972. Before Vladimir taking over his father's post, he was a prince in Novgorod.
Vladimir consolidated the realm of Kievan from Ukraine, Baltic sea, Belarus and Russia. He unified people against Baltic tribes. eastern nomads and incursion of Bulgarian.
Those who were the followers of slavic paganism were being converted to christians by Vladimir and they were then christianized by Kiev Rus'
That's about the time marxism had fully infected the democratic party. More options please
<span>Oligarchy</span><span>
We can be sure that ancient civilizations knew of and were concerned about infectious diseases from several facts. The hunter gatherers rarely suffered from water borne diseases. They knew that the water that stank or did not taste well was not good to intake. Their main knowledge came from experience. During the Greek period several doctors like Alcmaeon of Croton were mentioned and hence they must have had the knowledge about infectious diseases like Cholera. Several other infectious disease treatment have also been mentioned during the Greek period. </span>
