The adoption of the Cyrillic alphabet in Kiev, and the state's adoption of Eastern Orthodoxy, were results of its close relationship with a. The Holy Roman Empire.
b. The Byzantine Empire.
c. The Grand Duchy of Moscow.
d. The Golden Horde.

B - Byzantine Empire

Explanation:

I say this because that was during the time of said alphabet.

europe would not recognize the confederacy as an independent nation.

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