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Juan Rodríguez Cabrillo was an Iberian maritime explorer who is most famous for his exploration of the West Coast of North America. In 1542, Cabrillo led a Spanish expedition that sailed from Mexico to present-day California, becoming the first European to explore the Pacific coast of the United States. Cabrillo's expedition mapped the coast from present-day San Diego to Oregon, and he made several landfalls along the way.