Question

which constitutional principle served as inspiration for the creation of the three branches in the U.S. federal government

Answer 1

It´s the principle of separation of powers. This is an idea from the French thinker, philosopher of the Enlightenment Charles-Louis de Secondat, baron de la Brede et de Montesquieu (1689-1755), better known simply as Montesquieu. He wrote a book called The Spirit of Laws, a major contribution to political science.

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