How did the Cold War end in the late 1980s/early 90s?

Must be least 150 words each. Each part of the question must be addressed. DO NOT CITE ONLINE SOURCES!

1. How did the Cold War end in the late 1980s/early 90s? What factors and decisions led to the end of the conflict and the establishment of the U.S. as the world’s lone

superpower? You may discuss political, economic, and/or cultural reasons to explain your answer. 2. How has globalization introduced new challenges and issues into Western life in the modern period? Alternatively, what are some advantages to globalization that we have not seen in previous moments in Western history?