What was one key factor in the Aztecs rise to power?

One key factor in the Aztecs' rise to power was their strategic military conquests and alliances. By forming the Triple Alliance with Texcoco and Tlacopan in 1428, they expanded their territory and influence, enabling them to dominate central Mexico. Their effective use of tribute systems from conquered peoples also enhanced their wealth and resources, which supported further military campaigns and state-building efforts.