What caused world war i, and why did the united states enter the war?

The sixth amendment of the u.s. constitution guarantees the right to which of the following?

Human rights groups in the 20th century worked to: o a. european imperial powers maintain control over their colonies. o b. convince citizens in impoverished countries to embrace nationalism. o o o o c. ensure that people around the world were protected from brutal treatment. o d. weaken the influence of international organizations like the united nations. sub

What explains the political difference among african americans politicians during reconstruction