Jim Crow laws were state and local laws enforcing racial segregation in the Southern United States. Enacted after the Reconstruction period, these laws continued in force until 1965. They mandated de jure racial segregation in all public facilities in states of the former Confederate States of America, starting in 1890 with a "separate but equal" status for Blacks.
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It was because of Germany's use of submarines against neutral passenger and merchant ships. The unrestricted submarine warfare was agitating for the US, the last thing that provoked the Americans was the Zimmerman telegram.
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Issac Newton was the age of 26 when he became a professor of Lucian of mathematics.
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In Muslim worlds it used to be a lot less violent. now there are bombs blowing up all over the world. but we used to be at peace with them now we are at war