It's called a "city-state"
An organized social class system with government..this also included permenatly set homes and shelters for an extended period of time
Technological innovation and growing<span> trade with other nations. Industrial growth.</span>
I think the check and balances system work really well in united states.
This system prevent the government from becoming too tyrannical because it separate our government into legislative, executive, and judiciary branch.
If, one government handles all these three, the government could basically violate the law and directly change the law after that so it wouldn't be considered a crime