Because kiev was a major center of slavic population, kiev kept the slavs

under kiev’s powerful rule.
from being dominated by other groups.
from wanting to live in any place other than kiev.
under the influence of the eastern orthodox church.

Explanation:

Kievan Rus (862-1242 CE) was a medieval political federation situated in current Belarus, Ukraine, and part of Russia (the last named for the Rus, a Scandinavian people).

The name Kievan Rus is a present day (nineteenth century CE) assignment however has indistinguishable importance from 'place that is known for the Rus', which is the manner by which the district was alluded to in the Middle Ages. The Rus ruled from the city of Kiev thus 'Kievan Rus' essentially signified "the grounds of the Rus of Kiev".

ummm? is that supposed to be a question or a but this is a reason he won re-election

explanation:

"despite progress in the war, lincoln and most political pundits were convinced that he would lose his bid for reelection in 1864. the country was war weary and the democratic party's nominee, george mcclellan, was likely to negotiate a peace treaty with the confederacy if elected." - loc.gov

american troops were forced to withdraw following deadly bombings.

explanation: