Which era marked the beginning of european exploration and conquests in the americas, and the rise of a more interconnected global economy?
a. the contemporary era
b. the modern era
c. the intermediate era
d. the early modern era

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