King used a combination of powerful words and non violent tactics such as sit ins boycott and protest marches to do what?

How has the immigration of the 1990s affected the social and economic life of the united states?

What does this quotation from the introduction of thedeclaration of independence do?

Which statement best explains how world war ii to end the great depression? a. new job opportunities opened as the united states produced more military products. b. the u.s. army provided new jobs that paid better than any other work at the time. c. people had to worry more about war problems than about the economic crisis. d. the war caused people to trust the economy enough to spend more money.