Answer:
The Soviet states declared independence.
The Soviet Union collapsed.
Explanation:
On August 19, 1991, at 06.00 Moscow time, a statement was read on the radio that USSR President Mikhail Gorbachev could no longer perform his duties due to illness and that the State Committee for Emergency was taking over power. Swan Lake was aired on television screens, as when Leonid Brezhnev died and in long emergencies. The coup d'etat actually started on the 17th of August by the members of KGB.
The last step in the collapse of the Soviet Union occurred in December 1991, when Ukrainians voted overwhelmingly to secede from the Soviet Union. On December 8, 1991, the leaders of Russia, Ukraine and Belarus jointly signed an agreement in Minsk on the official end of the Soviet Union and the establishment of the Commonwealth of Independent States (CIS).
The answers are economic, Political, and natural disasters
Evidence suggests that the Minoans disappeared so suddenly because of the massive volcanic eruption in the Santorini Islands. Excavations there have uncovered Akrotiri, a Minoan town which was buried in this eruption, one of the largest in recorded history. The eruption was only 70 miles from Crete, the center of the Minoan civilization. Recent evidence suggests that the Santorini eruption was up to 10 times more powerful than the eruption of Krakatoa in 1883. It caused massive climatic disruption and the blast was heard over 3000 miles away.
We know now that the Santorini eruption and the collapse of the volcanic cone into the sea caused tsunamis which devastated the coasts of Crete and other Minoan coastal towns. Radiocarbon dating shows that a large tsunamis Crete at the same time as the Santorini eruption.