Answer: It was the 123 method and it got there by teachers teaching it early
Pythagoras created his namesake theorem that states for a right triangle, a²+b²=c².
Okay here are the details.
First Battle of Marne: It was fought in the North and East of Paris in early September 1914. It was a good opportunity for the French forces to advance through Belgium and France; fighting against the German's. French commander in chief Joseph Joffre ordered the attack. The British Expeditionary Force (BEF) rallied with the French Fifth Army to storm the German front. The French forces eventually won by taking advantage of the German's weak points in their defenses.
Second Battle of Marne: It was the last major German offensive on the Western Front. It began on July 15, 1918. It first started with Germany attacking in the Battle of Champagne. But the French were able to hold back their attacks. Later on, the French decided to launch a counter attack and the French came out with yet another victory against the German's.
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Checks and Balances system
Separation of Powers in the United States is associated with the Checks and Balances system. The Checks and Balances system provides each branch of government with individual powers to check the other branches and prevent any one branch from becoming too powerful.