Which statement best describes a difference between the political systems in ancient greece and ancient rome

Ithink it’s a ! hope this

The second option is correct according to edgenuity

One of the things that allowed native americans in mexico to settle cities larger than those in areas to the north was "b. the development of cities that were built by an earlier civilizations," since mexico had been the home of some of the world's most advanced civilizations before the columbian invasion