U.S. President Ronald Reagan fought to end the Cold War during his tenure in office (1981-1989). In 1987, Reagan delivered a passionate speech in which he challenged Mikhail Gorbachev, leader of the USSR, to tear down the Berlin Wall. Why did Reagan demand Gorbachev to tear down the Wall? What did the Berlin Wall represent? Why did Reagan's speech elicit such a rousing response from the audience, and from the world? Why do you think the Soviet Union would eventually tear down the wall?
Please answer this question with a minimum of 200 words.