Resigned and the soviet union ceased to exist on christmas day in 1991.

josef stalin

boris yeltsin

leonid brezhnev

mikhail gorbachev

Mikhail Gorbachev

Explanation:

The resignation took place on the Christmas of 1991, as Mikhail Gorbachev announced the decision to cease as head of state and to dismember the Soviet Union, declaring a consitution of the Russian Federation.

The other USSR member states already had begun to form separate republics and a Commonwealth . The CIS stands for the countries resulting from this.

The constitution of a Russian Federation was meant to incorporate the urgent changes in the economy, the politics ,  and the modernization of infrastructures across the country. Gorbachev opened doors to colaboration with the west. that ended the Cold war politics- Furthermore he sought a market economy based on the principles of liberalism.

Among other changes were the reduction in the nuclear war  heads from the arms race.

lend lease program was passed by congress on march 11, 1941. the president could ship weapons, food, or stuff to any country whose struggle against the axis assisted u.s. defense