Significant dates in Yuma history

A TIME LINE TRIP THROUGH YUMA HISTORY. 16,000 and 10,000 BCE – The first indigenous peoples arrive in the area now known as Arizona. 1540 – Spanish expeditions led by Hernando de Alarcon and Melchior Diaz arrive in Yuma by sea from the Gulf of California, noting the natural crossing of Colorado River as a potential site for settlement. ................
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