Slavery for sure. I believe the second one is economic differences between the North and the South.
The U.S Army was founded in <span>June 14, 1775, United States of America</span>
Answer:
Unlike the opposition Federalist Party, the Democratic-Republican Party contended that government did not have the right to adopt additional powers to fulfill its duties under the Constitution. ... The Democratic-Republicans were somewhat more egalitarian than the Federalists were.
C.
<span>A scientist who led the development of the atomic bomb.</span>
