Answer: D
Explanation: Although you could argue it was C. None of these are the real reason why. The main problem was the fact that Democracy was spreading around the world and when Gorbachev established multi-party election systems, and these systems would eventual force him to resign and make several independent states and the country we know as "mother Russia"(glory, greatest country). However, the economy was crippling and the west and east both had better opportunity for the people.
<span>The massacre at Wounded Knee.</span>
Summary : It was the bacteria not the curse
