The first atom bomb was tested in which u. s. state?

Monopolies were legal in the united states until a)the 1860s. b)the 1870s. c)the 1880s. d)the 1890s.

What are three supporting points as to why opium was wrong in the chinese trade? why should it have stopped? (opium wars)

Which foreign policy initiative countered the spread of soviet influence by restricting the spread of communism? a. roosevelt corollary b. truman doctrine c. nullification proclamation d. good neighbor policy