From what I read in The Economist, these Sun Belt regions often see steady population growth which can drive healthy rent appreciation.

The Market Context:The area I’m working in is not a large metro but a poorer region where issues like food insecurity affect 14–20% of the population.

Property prices determine rental rates, which are determined by population change.

A shopping mecca five times bigger than Lakeline Mall, a 21st century mega-factory, an ever-growing Apple campus and a somewhat secret but sizable spot occupied by Tesla.With a population increase from 2020 to 2023 of 14.5%, Williamson County is clocking more new residents than all other counties in this fast-growing region.

I agree with @Jonathan Greene that the question is vague, so my advice will have to be as well.The short answer: MTRs are real estate, so just like all real estate, any place that can long-term-rent cash flow with increasing jobs/population can be a suitable site to purchase. 

Belize is known for it's Banking and Offshore capabilities but, like most places that are "$ havens" the regular population is usually very poor.

That's the reason there are few successful entrepreneurs, most fail rather quickly, and the rest of the population is working 9 to 5 jobs. 

Great macroeconomics - lots of job growth, population growth, and companies developing here.

I consider inventory rates, price trends, unemployment data, population growth, job growth all to be relevant to where a market is at and where a market is heading.

Las Vegas's average annual population increases by 40,000 to 50,000 per year.