The Industrial Revolution began in the 18th century, when agricultural societies became more industrialized and urban. The transcontinental railroad, the cotton gin, electricity and other inventions permanently changed society.
Africa has the most wonders
Answer:
A. At The End Of The Santa Fe Trail
China is quite isolated because of surrounding mountains. Never seeing the other civilizations or hearing about them from nomads. It was difficult to travel there either way, one again because of the surrounding mountains, so no one was necessarily willing to venture out or into the area that was, at the time, China.
Bear in mind, I could be wrong. But I'm 98% positive that it is correct.