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Europeans drafted and pressed Africans into labor because Europeans had gun powder. Gun powder and an immense amount of resources, they where able to enslave and brought africans to America to be used as For hard work and labor an agricultural purposes.
Slavery began in America as early as the 1800s
The first Labor Day parade was held in New York City.
This first parade was held on Tuesday, September 5, 1882. This was a day of picnics, concerts and speeches. Ten thousand workers marched in this parade, which ran from City Hall to Union Square.
The presidential elections of 1932. hope this helps. :)