How did Ronald Regan change US foreign policies to combat communism and bring about an end to the Soviet Union?

Reagan supported anti-communist groups around the world. ... Reagan believed that the American economy was on the move again while the Soviet economy had become stagnant. For a while, the Soviet decline was masked by high prices for Soviet oil exports, but that crutch collapsed in the early-1980s.

answer; i believe that the correct answer is (chronological order);

russia because it is the biggest state