The Tepanecs or Tepaneca are a Mesoamerican people who arrived in the Valley of Mexico in the late 12th or early 13th centuries.

What did the Aztecs do to conquer the Tepanec?

The Aztecs, Texcoco and Tlacopan joined forces in 1428 to create the Triple Alliance. Together they fought against the Tepanec and challenged them for superiority in the Valley of Mexico. ... The Aztec controlled these different societies by forcing them to provide tributes for payment and ritual sacrifice.

What was the Tepanec war?

These two empires came face to face in 1428 with the Tepanec War. The Azcapotzalco forces were defeated by an alliance of Texcoco, Tenochtitlan (the capital of the Mexica) and several other smaller cities. Following victory, a Triple Alliance was formed between Texcoco, Tenochtitlan and a rebel Tepanec city, Tlacopan.