all sorts of armor! steel swords, cannons, and guns were some of the weapons though.
the Aztec civilization was conquered / how they were conquered. I..I.. I don't know.
Mexico
the spanish
Spanish and fought the mayans a several timesND
They were fighting over the land that was owned by the Aztecs, as well as the differing religions of the two cultures.
Greed and power.
The Spanish were able to conquer the Aztecs because the Aztecs were not very advanced in technology, where as the Spanish had technology like swords, armor, things that the Aztecs didn't have then. So the Spanish took advantage of this and terrorized the Aztecs completely, killing thousands, and taking remainders as slaves. Another answer: The spanish soldiers made effective use of their military technology against the aztecs
The invading Eurpeans (Hernan Cortez, et al) spread diseases like smallpox and measles, against which the Aztecs had no immunity. Thousands and thousands of the Aztecs died, to the point that they could no longer fight against the invaders.
They joined the US to fight the Spanish
Hernan Cortez arrived at Tenochtitlan in 1519, so probably around this time.
1. Much better weaponry, and horses; 2. the Aztec assumption long held, that the Spanish were some sort of gods; and 3. the 'bloody-mindedness' of the Spanish. Aztecs if they fought, fought to make prisoners and so did not fight to kill (and never really developed the weapons for it). They were totally taken by surprise by a mindset where killing as many adversaries as possible in a fight was a goal in itself.