The united states financed its efforts in world war ii by

US funded its World War II effort massively by raising taxes and tapping into Americans' personal savings.

Explanation:

During World War II, the United States began to provide significant military supplies and other assistance to the Allies in September 1940, even though the United States did not enter the war until December 1941

The US paid for the Great War the same way States always pay for war: It stole the money from its citizens through taxation and public debt. By the time the US entered the Great War, the personal income tax was already in place. ... And then another war came along, with more taxes and more war bonds. Fleece, waste, repeat.

i think the answer is c, rivers.

explanation:

sometimes, borders fall along natural boundaries like rivers or mountain ranges. for example, the boundary between france and spain follows the crest of the pyrenees mountains. for part of its length, the boundary between the united states and mexico follows a river called the rio grande. the borders of four countries divide africa’s lake chad: niger, chad, cameroon, and nigeria.

the federalist party which advocated strong centralization dominated the united states government till 1800. so 1800 election transformed the power from one party to another party for the first time and was thus a turning point in american history. so jefferson called it "revolution of 1800".

explanation: