Why did soviet leader Gorbachev pursue glasnot and peresteoika?

Should China's first emperor be remembered for his accomplishments or cruelty? How did the black plague change things? Did al Capone make alcohol even though it was ilega? Why does a white flag mean surrender? How mini what direction would the Mycenaeans have had to travel to reach the Minoan civilization? A quote by Johann Gutenberg? Where does John Green put the roots of American Revolutionary War? What is the transportation the caribs use? Did Juan Ponce De Leon Accomplish His goal or what he was set out to do? Jesuit on the expedition that led to the discovery of the Mississippi river? What began the development of the two distinct europen civilization of the western romen empire and the eastern byzantine empire? What is the Hamilton Plan? Why is St. Patrick remembered? Who reported that the Americans had successfully repelled the Tet Offensive? How many games has Wrigley Field sold out? What soviet premier denounced the harsh policies of Stalin and announced a stalinzation program in the soviet union? What did new mexicos involvement in the spanish american war show? Which of te following did the Treaty of Ghent resolve? What were the two main things the Greeks traded? What events lead to the invasion of Poland?