Discover more about the growth of tourism in Northern Ireland and how it's become one the most important industries.

Discover more about migration, the human and physical barriers to it and the different types of migrants.

Find out more about the reasons for migration from and into Ireland and then Northern Ireland over the past 200 years.

Development measures progress within a country. The development gap refers to the differences between high income countries (HICs) and low income countries (LICs).

Population is the number of people in a certain area. The population of a country changes over time due to birth rates, death rates and migration.