Answer:
The US removed Taliban from power because the Taliban was protecting Osama bin Ladin, the instigator of the attack of Sept. 11, 2001, with the destruction of the twin towers, the pentagon, and 4 aircrafts. With the Taliban not handing over the instigators, the US declared war and defeated the majority of Taliban during that time.
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It made the state number even so there were an even number of slave states and non-slave states. It also abolished slave trade in Washington, d.c. becasue many people were angry about there being trading there.
Nazi Germany and the Soviet Union had a non aggression pact. When Germany's attempt to conquer England failed Hitler turned his attention to the Soviet Union. When Germany broke the treaty with the Soviet Union the Soviet Union asked to join the Allies in the fight against the Axis Powers.
hope this helps!