Answer:
The U.S. and Great Britain wanted to secure the cooperation of the Soviet Union in defeating Germany. Stalin agreed, but at a price the U.S. and Britain would accept Soviet domination of Eastern Europe, support the Yugoslav Partisans, and agree to a westward shift of the border between Poland and the Soviet Union.
Explanation:
The meaning of this quote "A leader is best when people barely know he exists; when his work is done, his aim fulfilled, they will say; we did it ourselves" means if the leader is unknown to many people once he has finished or achieved a remarkable goal other people (such as Laozi) can steal the glory and be remembered for something they didn't do.
I think the Embargo Act of 1807 had decreased, which means that argicultural prices and earnings fell, which shipping industries were upset.
So that they can voice their opinion
An ally is a:
combine or unite a resource or commodity with (another) for mutual benefit
It helps one side more than the other, for the side with the allies has a better advantage than the side with little to no allies.