The help of African-American military personnel during World War II drove for greater civil rights after the war. A perfect example of this would be the Tuskegee Airmen. This group of African-American pilots performed thousands of successful missions during World War II. This showed that African-Americans contributed a significant amount to the war effort and were willing to risk their lives for their country. These accomplishments were used as proof that blacks deserve the same rights as whites in American society.
The third amendment, which prevents quartering, has been violated.
It ruled the act constitutional.
I'm not sure if any were begun in 1775. The American Revolution was occurring at the time but it started in 1760's the sugar and stamp acts were in 1764 and 1765, While the Townsend act was in 1770. The declaration wasn't even started until 1817.
20 increased by 12.5% is 22.5