President Hoover was unprepared for the scope of the depression crisis, and his limited response did not begin to help the millions of Americans in need. The steps he took were very much in keeping with his philosophy of limited government, a philosophy that many had shared with him until the upheavals of the Great Depression made it clear that a more direct government response was required. But Hoover was stubborn in his refusal to give “handouts,” as he saw direct government aid. He called for a spirit of volunteerism among America’s businesses, asking them to keep workers employed, and he exhorted the American people to tighten their belts and make do in the spirit of “rugged individualism.” While Hoover’s philosophy and his appeal to the country were very much in keeping with his character, it was not enough to keep the economy from plummeting further into economic chaos.
The steps Hoover did ultimately take were too little, too late. He created programs for putting people back to work and helping beleaguered local and state charities with aid. But the programs were small in scale and highly specific as to who could benefit, and they only touched a small percentage of those in need. As the situation worsened, the public grew increasingly unhappy with Hoover. He left office with one of the lowest approval ratings of any president in history.
The US never wanted to join World War II so they isolated themselves from everything that was going on and tried to stay neutral (Over time, we sided with the Allies). Mainly, we entered due to the Japanese attack on Pearl Harbor. After the bombing, the US decided to declare war on Japan. Soon after, Nazi Germany's leader declared war on the US and then the US was officially in the war.
So, all in all, it was the bombing of Pearl Harbor on December 7, 1941.
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C: had seen Islamic influence driven from the region by the joint French-Dutch “light” campaign
The cultural impact of the British mercantile system is that it led to cultural exchange through trade with the rest of the world which made other cultures acceptable. It made America a melting pot whereby various cultures were accepted including the right of religious freedom