The Neighborhoods of a City

What if regions of the world were like the neighborhoods of a city? What would the world look like? I'd describe it like this Western europe would be an assisted living facility with an aging population lavishly attended to by turkish nurses. The united states would be a gated community with a lot of people sitting in their front yards Complaining about how lazy everyone else was. India china and east asia would be the other side of the tracks Their neighborhood is a big teaming market made up of small shops and one room factories Interspersed with Stanley Kaplan SAT prep schools and engineering colleges. Africa sadly is that part of town where the businesses are boarded up life expectancy is