Ostpolitik was a German plan to "<span>b. improve relations with Eastern bloc nations," since this was during the Cold War, and it had become clear that such division was unhealthy from a social and economic standpoint. </span>
Constantine moved the capital to Byzantium, which he renamed Constantinople. =)
help Western Europe not fall into the evils of communism. it also helped recover western Europe from all the war and damaged that was caused
I believe the answer is d