In 1917, Germany attacked some passengers in submarines from the US that led the US to assist in WW1. Hope this helps!
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The 1970s saw some of the highest rates of inflation in the United States in recent history, with interest rates rising in turn to nearly 20%. Central bank policy, the abandonment of the gold window, Keynesian economic policy, and market psychology all contributed to this decade of high inflation.
The sons of liberty were a secret group that found ways to oppose the british.
This period was known as the baby boom, and this generation is still referred to as the "baby boomers," this being because there was a huge increase in the birth rate as people returned home from the war.