Site factor
Factors that relate to the unique characteristics of a location (labour, land and capital).
Situation factor
Factors that relate to how the location of the place relates to other things.
Megacity
Cities that have 10 million to 19,999,999 population.
Metacity
Cities that have over 20 million population.
Core country
Very important countries that can impact global economics (socially developed, capitalist).
Semi-periphery country
Countries with the economics are growing; sometimes the economy is huge but the country is maybe communist or socially not that developed.
Periphery country
Countries do not have a big impact on global economics; poor countries and developing socially.
Rank-size rule
When a country’s second largest settlement (city) is a half the population of the largest settlement.
Primate city
When the largest settlement has more than twice as many people as the second ranking settlement.
Gravity model
About how cities pull people into them.