What happened in 1800 to change the way people live and worked in united states?

Do you believe that unity of purpose and belief are what made the american colonies strong, or do you believe that societies whose citizens were compelled to interact with people of differing beliefs were the most successful, based on the history

In the early 1900s, the national association for the advancement of colored people strongly urged the federal government to a) punish lynch mobs. b) overturn jim crow laws. c) limit integration. d) limit activist organizations.

Which of these events was a severe setback for the u. s. war effort in the pacific?