They came to the US as part of the Bracero program.
Because the North stopped helping. Government gave up. Black people couldn't buy land so the did sharecropping instead.
The American Revolution was mainly cause by colonial opposition to the British attempt to place greater control over the colonies as well as to make them repay the crown for defending them during the French and Indian war.
<span>"Each state represented its own branch of men that were to be called out to the war, and to keep the state safe in case of need of retreat. The nationals were to conduct treaties to nations such as France and request supplies, such as weapons troops and armada which is boats and naval weaponry. The main thing for the nation was to round up a mass continental army that would make the British flee and draw a plan for declaring a new independent nation known as America."</span>
