Three civil rights leaders were murdered during a voter registration campaign in mississippi known as the freedom summer.
Freedom to vote
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Such groups include hunter-gatherers, pastoral nomads (owning livestock), and tinkers or trader nomads. In the twentieth century, population of nomadic pastoral tribes slowly decreased, reaching to an estimated 30–40 million nomads in the world as of 1995.
The one that was a factor in the U.S entry in world war I was :
B. the sinking of the Lusitania
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Forced the fedral goerment into heavy debet
