How Did Expansionists Justify Imperialism in the Late Nineteenth Century

How did expansionists justify imperialism in the late nineteenth century?

A) They hoped to decrease the amount of government spending that went into the nation's military.
B) They wished to experiment with other types of government than democracy.
C) They sought racial equality and thought this could be achieved through a more diverse society.
D) They sought to spread their Christian and democratic beliefs to other parts of the world.
E) They wished to help the United States become less entangled in foreign affairs and more focused on domestic issues.