The numerous near-wars and diplomatic crises of the United States in the late 1880s and 1890s demonstrated a the hostile reaction to American expansionism. b that other nations were jealous of American power. c how weak America seemed to the rest of the world. d the failure of the Monroe Doctrine. e the aggressive new national mood.

e. the aggressive new national mood.

Explanation:

The numerous near-wars and diplomatic crises of the United States of America in the late 1880s and 1890s demonstrated the aggressive new national mood.

During the late 1880s and 1890s, the United States of America was mainly tensed up and aggressive towards other nations such as the Great Britain, India, etc. Thus, it took the actions of reasonable leaders (Presidents) to avert such near-wars and diplomatic crises in the United States of America.

checks and balances are needed to keep the government running smoothly, they allow the three branches of government to overrule one another so that one branch of government does not become too powerful.

explanation:

japan participated in world war i from 1914 to 1918 in an alliance with entente powers and played an important role in securing the sea lanes in the west pacific and indian oceans against the imperial german navy as the member of the allies.