Where did the Aztec empire exist and who conquered it?

The Aztec Empire existed in what is now central Mexico, with its capital at Tenochtitlán, located on an island in Lake Texcoco. The empire was conquered by Spanish conquistador Hernán Cortés in 1521, following a series of battles and alliances with local tribes who opposed Aztec rule. The conquest marked the end of the Aztec Empire and the beginning of Spanish colonial rule in the region.