| The Columbia Encyclopedia, Sixth Edition. 2001-07. |
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| Ulloa, Francisco de |
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(fränth s´k th ly ´ä) (KEY) , d. c.1540, Spanish explorer in Mexico. Against the orders of Viceroy Antonio de Mendoza, Hernán Cortés sent Ulloa to explore the Gulf of California. In 153839 he sailed to the head of the gulf, thus proving that lower California was a peninsula. |
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| | | The Columbia Encyclopedia, Sixth Edition. Copyright © 2007 Columbia University Press. |
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