Mikhail Gorbachev's Policies led to the end of Communism in the USSR

the conditions that made the byzantine empire vulnerable to attacks by the muslin turks were the sack of constantinople by western crusaders, the conquests of the sultanate of rum, presence of rival kingdoms and finally the set up of fiefdoms at the empire which were owned by the ghazis (turkish warriors).

a. theta waves. this is because the person is in a light sleep which means the brain waves would show these kind of waves.

sitting in that one chair where he could get shot at was his worst decision.