Because the U.S supposedly helped other countries
I believe the answer is <span> rock festivals that became popular toward the end of the decade..
The rock festivals is the equivalent of the tech crunch disrup in tech field. In the rock festival, artists with various style, instruments, and social group could come and express their artistic identity.</span>
A democracy which Is the correct answer if you are talking about the 20th century
The nullification crisis was a dispute over the power of the states to reject unconstitutional federal laws.
