The Soviet Union did this because they wanted to rebuild and expand their country after massive destruction and loss of life during the war. Essentially this aggressive expansion and annexing of these countries made the world realize that the Soviets were a massive threat to the world even though they were allies during WWII. I hope this helps :)
The famous Wade-Davis bill opposed the "10 percent plan" of Lincon. The Wade–Davis Bill (1864) was proposed to reconstruct the South. In contrast to the Ten Percent Plan, the bill ensured the re-admittance to Union on majority in every Southern state for taking the oath.
