What new wepon helped the end of world war 2

Who was the first president of the united states (just trying to y’all get points)

What was the result on the u. s. economy because of the major changes in atlantic shipping prior to and during the war of 1812?

Which of these statements describes a long-term impact of european imperialism in africa? a. african countries joined together to present a united front against imperialism. b. europeans paid african countries after colonizing them, offering these new countries a fresh start. c. european powers drew the current borders, splitting ethnic groups among modern countries. d. africans became more loyal to their countries than to their ethnic groups.