Answer:
The benefits of studying history include learning what made life the way it is and to gain knowledge to not to repeat the bad parts of history. It is important to know what happened and how it can be avoided next time.
( I know this is not all of it but I hope this helps by putting this small part in there. )
The huge amount of people in China that migrating internally towards the cities is because of two main reasons:
1. The cities in China have developed immensely and offer lots of opportunities; the Chinese cities have developed significantly from all aspects, they offer lots of opportunities, bigger wages, better life, and the chance for prosper.
2. The rural areas of China had not experienced any significant development and mostly stagnate; the rural areas of China have remained mostly poor, the opportunities are limited mostly to working in agriculture, they have stagnated in time unlike the urban areas of the country, the income is very low, and prospering into this environment is extremely difficult and usually limited to only certain individuals.
December 7th, 1941 after the bombing of Pearl Harbor, that’s when America decided to step in