British influence on rock 'n' roll music in the United States.
Explanation:
British Invasion, musical movement of the mid-1960s composed of British rock-and-roll (“beat”) groups whose popularity spread rapidly to the United States. The Beatles' triumphant arrival in New York City on February 7, 1964, opened America's doors to a wealth of British musical talent.
The civil war still proceeded to happen over the morality and legality of slavery, so the Missouri compromise was clearly ineffective at preventing war and appeasing both sides permanently.
