What principles of the u. s. government originated in athenian democracy?

Our Founders realized that the Athenian form of democracy was impractical in large nations. They took the idea of democracy and came up with "representative democracy." Under this system, citizens elect representatives to make these decisions for them. It's for this reasons we have elections through which we elect our leaders.

Thus America is a constitutional republic and not a democracy as such.

although world war i began in 1914, the united states did not join the war until 1917. the additional firepower, resources, and soldiers of the u.s. to tip the balance of the war in favor of the allies. remaining neutral. when war broke out in 1914, the united states had a policy of neutrality.

the congress was known as inneficient and scandalous.