1. Who oversaw the Soviet Union before Stalin?

Vladimir Lenin

Explanation:

The government of the Russian SFSR led by Vladimir Lenin governed the Soviet Union until 6 July 1923, when the CEC established the Council of People's Commissars of the Soviet Union. Lenin was appointed its chairman, alongside five deputy chairmen and ten people's commissars (ministers).

this means that germany had to pay the allied countries. reparations are/is essentially payment for something that they have done wrong, so after ww1, germany was forced to pay reparations so they could replenish the allied countries resources' that they had lost during the war.