Moctezuma also known by a number of variant spellings including Montezuma, Moteuczoma, Motecuhzoma and referred to in full by early Nahuatl

Nahuatl

Nahuatl is thought to mean "a good, clear sound" This language name has several spellings, among them náhuatl , Naoatl, Nauatl, Nahuatl, Nawatl. In a back formation from the name of the language, the ethnic group of Nahuatl speakers are called Nahua...

 texts as Motecuhzoma Xocoyotzin, was the ninth tlatoani

Tlatoani

Tlatoani is the Nahuatl term for the ruler of an altepetl, a pre-Hispanic state. The word literally means "speaker", but may be translated into English as "king". A is a female ruler, or queen regnant....

or ruler of Tenochtitlan, reigning from 1502 to 1520. The first contact between Indigenous civilizations of Mesoamerica and Europeans took place during his reign, and he was killed during the initial stages of the Spanish conquest of Mexico

Spanish conquest of Mexico

The Spanish conquest of the Aztec Empire was one of the most important campaigns in the Spanish colonization of the Americas. The invasion began in February 1519 and was acclaimed victorious on August 13, 1521, by a coalition army of Spanish conquistadors and Tlaxcalan warriors led by Hernán Cortés...

, when Conquistador

Conquistador

Conquistadors were Spanish soldiers, explorers, and adventurers who brought much of the Americas under the control of Spain in the 15th to 16th centuries, following Europe's discovery of the New World by Christopher Columbus in 1492...

 Hernán Cortés

Hernán Cortés

Hernán Cortés de Monroy y Pizarro, 1st Marquis of the Valley of Oaxaca was a Spanish Conquistador who led an expedition that caused the fall of the Aztec Empire and brought large portions of mainland Mexico under the rule of the King of Castile in the early 16th century...

 and his men fought to escape from the Aztec capital Tenochtitlan.

During his reign the Aztec Empire reached its maximal size.