I don't think it is possible to overstate how significant those ideas were.
That was the time in which the absolutist governments of Europe began to fall, being replaced with Constitutional Monarchies or other representative governments. This led to upheaval in much of Europe as the "old guard" of nations faced revolutions or wars with nations (like France) that wanted to change their own political orders as well.
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December 7, 1941, became a "date which will live in infamy" because that was the date of the attack on Pearl Harbor. The speech was delivered on Dec 8 and is referred to as the "Pearl Harbor Speach." Within the hour of the speech war was declared by Congress, against Japan, which officially brought the U.S. into WW2.
Explanation:
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The answer is B.
The Great Migration was the movement of six million African Americans from the Southern U.S. to the North. As you probably know, back in the 1900's, segregation of African Americans was on the rise. At the time, the North was not involved in this segregation, so African Americans migrated to the Northern states to escape discrimination.
