The concept of separation of power (i. e. a system of checks and balances) that was used in forming the u. s. constitution was drawn from

The concept of the separation of powers was drawn from the political writing of the French philosopher, Baron de Montesquieu.

The "Separation of Powers" principle was an idea embedded into the plans for American government by our founding fathers, based on their reading of Enlightenment political theory.  The terminology "separation of powers" was introduced by Charles-Louis de Secondat, the Baron of Montesquieu.  (Usually he's referred to as just "Montesquieu.")  He wrote an important work of political theory called The Spirit of the Laws, published in 1748.

Within his treatment of how governments will function best, Montesquieu argued that executive, legislative, and judicial functions of government ought to be divided between parts of the government, so that no one person or division of the government can infringe on the overall rights of others in the government or of the members of the society overall.

frederick the great and the war of austrian succession. frederick william of brandenburg-prussia trained his son, frederick, to be a hardy soldier. he also declared himself king of bohemia, and maria theresa sent troops to retake bohemia. in august he led 80,000 of these men across the frontier into bohemia, his

explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

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