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Answer
50 years
Explanation
Early in the 16th century European people knew and believed that all human originally came from the garden of Eden which was located at the confluence of the Euphrates. They were later confused when they realized that there were other people who lived in other places like America . It took them 50 years to have garden of Eden without humans.
Salem Massachusetts. (Salem Witch Trials)
Every four years the President,vice president,one third of the senate,and the entire house are up for election(on-year elections). I hope this helps you...
