B) Cuba's economy weakened
North Vietnam launched an invasion of South Vietnam. ... The attack of two U.S. destroyers by the North Vietnamese.
the last sentence is the one I think
It is evident through four legislations, namely, Morrill Tariff of 1861, Morrill Land Grant Act of 1862, <span>Homestead Act of 1862 and </span>National Bank Act of 1863. These were housing, agriculture, banking, railroad and tariff legislations which helped boost the North's economy.
The articles of confederation was deemed too weak by federalists and required state approval for action therefore the answe is b
