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Answer:
The Great Depression had devastating effects in countries both rich and poor. Personal income, tax revenue, profits, and prices dropped, while international trade plunged by more than 50%. Unemployment in the U.S. rose to 25% and in some countries as high as 33%.
1. 1950 Korean war begins.
2.1954 First nuclear powered submarine launches: USS Nautilus
3. 1958 NASA is formed
4. 1961 JFK becomes president
<span>5. 1963 John F. Kennedy killed in Dallas
Hope this helps! :)</span>
Trench warfare was the main style of war during World War I. It consisted of both sides of the war, called fronts, digging trenches in the ground for their soldiers to live and fight in. Trenches were deep ditches dug in the ground that were often cramped and dirty. As the dug trenches further forward, they would take more land in the battle.
This was a very slow process and often would result in tens of thousands of casualties for a few yards of land. This is especially true because of the heavy use of mounted machine guns that both sides of the war used. These guns would tear through enemies easily. This style of warfare was also vulnerable to bombings and gas attacks, as the soldiers were stuck in the trenches and the heavy poisonous gasses would sink into the trenches.