Rus-Byzantium Union

This was a concept from the original board I figured was worth reviving.

So, lets get the Kievan Rus and the Byzantines together.

I read somewhere that the big three Religious cities in 1200 were -Rome-Contantinople-Keiv-

In 124? the ruler in Keiv is visiting Contantinople when the Cursaders Attack. His Troops help drive off the attackers, This leads to increased sense of Orthodox vs Catholic.

Over the next several decades this grows into a Political Union.