<span>new labor union established in the late 1800s sounds right</span>
The Great Migration was the relocation of more than 6 million African Americans from the rural South to the cities of the North, Midwest and West from about 1916 to 1970.
The battle of lexington and concord showed that the colonists were going to do anything for their freedom, including go to war with Great Britan. They were also the first shots of the revolutionary war.
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The US, the UK, the USSR, and China had not belonged to the League of Nations, and therefore had no interest in the United Nations.
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Nikola Tesla
Nikola Tesla first discovered resonant coupling during his pioneering experiments in wireless power transfer around the turn of the 20th century, but the possibilities of using resonant coupling to increase transmission range has only recently been explored.
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