The distance across the Atlantic Ocean
The British government would have to travel across the Atlantic to send any communication, enforce any laws or exchange any resources with the American colonies.
Americans were self-sufficient and could provide anything they needed to support their society because of they didn't depend on Great Britain they were less excepted on their rule.
The Aztecs were known for their agricultural influence in farming. They mostly grew crops such as corn, and their diet was dominated by fruits and vegetables.
The fertile plains near the Nile helped the civilization grow
Have access to the internet and electronics