Respuesta :
Your answer is D The Native Americans joined the Spanish forces because if they become allies with they will provide money, and troops, more money will buy more weapons and more troops so the Aztecs will get conquered and they don't have to worry about them any more also its not A because communicate wont help with a war its not B because it wasn't about Gods back then it was about power and wealth and when it came down to C, and D I choose D because the Spanish could of provided us with horses but why would they if we are not allies with them. Your answer is D.