What’s the answer to this???

How did testimony such as this from the triangle shirtwaist factory disaster affect the workplace?

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

How did the us change it’s economy to provide supplies for the war effort?