Settlement by the Spanish started the European colonization of the Americas. They gained control of most of the largest islands in the Caribbean and conquered the Aztec empire, gaining control of present-day Mexico and Central America. This was the beginning of the Spanish Empire in the New World. The first successful Spanish settlement in continental North America was Veracruz founded by Hernán Cortés in 1519, followed by many other settlements in colonial New Spain, including Spanish Florida, Central America, New Mexico, and later California. The Spanish claimed all of North and South America (with the exception of Brazil), and no other European power challenged those claims by planting colonies until over a century after Spain's first settlements.