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Near water
19th century factories were often powered by mills that used the running water of a river. This is part of the reason many industrial towns were built on rivers. They were also powered by coal.
New England
Because they provided water power to run the machinery and a place to dump their waste
wright brothers curtis also built early military planes
Early factories obtained their workers through bribes and smuggling. Some factories also took children from schools as early as 8 years of age.
Otto Lillienthal pioneered the science of gliding and his work was built upon by The Wright Brother for their powered flight
After the War of 1812, there were many new factories built in the North. New York, Delaware, and New Jersey were some of the first states that had a high concentration of factories in the early part of the Industrial Revolution.
Mainly in the eastern half of the US, cause the west wasn't explored yet. They were usually along rivers so that the water could be used as power. It was also more in the Northern half, like PA or NY.
They were powered by handANS 2 -Many early sewing machines were powered by foot. Your feet worked back and forward on a 'treadle' at the base of the machine.
poverty
At the beginning of the Industrial Revolution, factories were commonly built next to flowing rivers or other water source because people used the water as an energy source to run the machines in the factory.