Can someone help me for the 3 first questions

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

Over time, who did the nature of slavery change in america

Ireally have to get this done today and i'd appreciate any i could get, !