What events officially marked the end of the Soviet Union?

On December 25, 1991, the Soviet hammer and sickle flag lowered for the last time over the Kremlin, thereafter replaced by the Russian tricolor. Earlier in the day, Mikhail Gorbachev resigned his post as president of the Soviet Union, leaving Boris Yeltsin as president of the newly independent Russian state.

Explanation:

explanation:

the president, prime minister, chief justice, speakers and ministers take their oath of office. the oath is taken in bengali

these civilizations were located around fertile rivers, where they could produce an abundance of crops