2. What happened in 1989 that lead to SAC being unnecessary and eliminated

The Revolutions of 1989 formed part of a revolutionary wave in the late 1980s and early 1990s that resulted in the end of communist rule in Central and Eastern Europe and beyond. The period is often also called the Fall of Communism[3] and sometimes called the Fall of Nations or the Autumn of Nations,[4][5][6][7][8] a play on the term Spring of Nations that is sometimes used to describe the Revolutions of 1848.

Explanation:

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