What were Washington’s two biggest challenges as President?

Slavery and the start up of the government

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

According to edgenuity, the correct answer is d. having more power than others.