Why do you think most native american groups did not form large empires like the aztec and the inca did?

Because the native American people didn't have everything that the Aztecs and Inca had they had special mechanisms that helped them building their pyramids  

I think this is right                                                                                                                                                                                                                              Because the native American people didn't have everything that the Aztecs             hope it helps

Rehab i’m not sure but i hope this