Henry Ford was the first man to create the concept of the assembly line. This was when every employee was responsible for assembling only one part on Ford's cars. The assembly line was able to ramp up production and turned thousands of cars every month which resulted in more profits for Ford.
It killed almost 50% of the population. They were devastated. Because there was no cure for it, they turned their faith towards God.
I believe it's because the British Empire inconsistent treatment.
At first, British empire treated the colonists fairly and both of them developed a mutually beneficial relationship with one another.
After 1763, the British Empire issued a regulation that banned the Colonists to issue their own paper money, which make it realy hard for the colonists to pay off their debt.