Urbanisation
The increasing proportion of the world’s population living in urban areas: towns and cities.
Rural-to-urban migration
The movement of people from the countryside into towns and cities.
Natural increase
When the birth rate is higher than the death rate. (Often young people migrate to urban areas and then settled and started families.)
Push Factors
The factors pushing people out of a place - negative
Pull Factors
The factors drawing people into a place - positive
Megacity
A city with a population of over 10 million