I believe the answer is Jews
The 1848 Treaty of Guadalupe Hidalgo, forced onto the remnant Mexican government, ended the war and specified its major consequence, the Mexican Cession of the northern territories of Alta California and Santa Fe de Nuevo México to the United States.
Answer:
Germany also believed that the United States had jeopardized its neutrality by acquiescing to the Allied blockade of Germany. German Chancellor Theobald von Bethmann-Hollweg protested this decision, believing that resuming submarine warfare would draw the United States into the war on behalf of the Allies.
WWI was started because a Serbian nationalist assassinated archduke Francis Ferdinand and acting like a friend who is in a fight Germany jumped in and held Serbia responsible for the assassination starting WWI. The effect s it had on European countries were the collapse of their economies and wanting Germany to pay war reparations mostly to Britain and France totaling to 33 billion dollars this is when the Great Depression started after the stock market crash and the failure of banks.
