How did the byzantine empire impact the development of russia ? ?

Orthodox Christianity is the main religion in Russia today. The Russian title “Czar” comes from the Roman and Byzantine term “Caesar.” The curved domes of Russian architecture were influenced by Byzantine designs. Russia's Cyrillic alphabet was created by the Orthodox missionaries from the Byzantine Empire.   

that should be helpful and useful. cuz im not just gonna give you the answer. you have to figure it out on your own.

A. southerners underestimated republicans eagerness to end slavery.

It is b, the civil law. i study  criminology