What was the most significant american contribution to the allied cause before 1942? ?

a. air support for allied troops
b. military ground force in the pacific
c. war materials leased to allied forces
d. atomic research of the manhattan project

How has u. s. participation in international economic development efforts affected other countries? o a. it has made some countries decide they no longer want close ties with the united states. b. it has ended diplomatic ties with countries that refuse to participate. c. it has raised money to poor nations grow their economies. d. it has caused the united states to intervene militarily to stop human rights abuses.

The u. s. constitution outlawed slavery. true false

What was the most significant result of the opium wars? a. china’s navy was exposed as incompetent. b. china could no longer impose tariffs. c. they increased britain’s influence in china. d. they decreased europe’s influence in china.