How did african americans support the war effort?

What does the document of the birtish octopus is an uderlying cause of the world war 1

In 1816, john c. calhoun proposed that: a. that the federal government aid in the construction of roads and canals to improve transportation to and from the west b.the united states should end slavery. c.the united states should increasing the size of the navy and invade central america. d. the united states should annex hawaii

Experimented with communism before taking part in a number of civil rights and antiwar protest