There are several factors that can limit populations in different parts of the world, including:
1. Availability of resources: Limited availability of food, water, and shelter can constrain the growth of a population.
2. Disease and health issues: Outbreaks of disease, poor healthcare infrastructure, and limited access to healthcare services can limit population growth in certain regions.
3. Natural disasters: Regions prone to natural disasters such as earthquakes, hurricanes, and floods can experience population limitations due to destruction of infrastructure and loss of life.
4. Environmental factors: Harsh climates, limited arable land, and other environmental factors can restrict populations in certain areas.
5. Political instability and conflict: Regions experiencing political unrest, war, or conflict may have unstable populations due to displacement, migration, and violence.
6. Economic factors: Poverty, lack of job opportunities, and economic hardships can limit populations by causing individuals to migrate in search of better opportunities.
7. Social and cultural factors: Cultural norms, traditions, and social structures can influence population growth and limits in different societies.
8. Government policies: Restrictive government policies such as strict immigration laws, population control measures, and limits on family size can also impact population growth in different parts of the world.