Answer:

Supporting Gorbachev’s reforms.

Explanation:

President Bush met Gorbachev at Malta in 1989 and in this meeting they completed the Conventional Forces in Europe treaty. With this Bush supported Gorbachev’s reform efforts, such as elections with a multi-party system with the START agreement.

By supporting Gorbachev’s reforms, Bush helped to destabilize the Communist control in the Soviet Union, which eventually contributed to the collapse of the Soviet Union. The Red Troops were removed from East Germany, reunified Germany and the country joined NATO.