During the Second Industrial Revolution, the labor movement in the United States grew out of the need to protect the common interest of workers. These labor unions fought for better wages, reasonable hours and safer working conditions as during that time, the working conditions in factories, mills, and mines were terrible. So workers joined together and created unions in order to fight for their safety and better and increased wages.
Some of the Seminoles remained in their land up through the 1940's.
It was "c. the Declaration of Independence" that was the revolutionary document was signed on July 4th, 1776, since this officially led to the American Revolution between the colonies and Britain.
Spurred by the innovation of oil refining , a vehicle with four wheels powered by an engine ,and not a horse.