.
Secondly, displaced persons are people who are forced to move based on social situations occurring around them. Colonialism, slavery, war, persecution, natural disasters, large scale mining, and dam building are major causes of population displacement. An example of a displaced person is a refugee. They are referred to as internally displaced persons (IDP). IDPs are people who are forced to leave their homes and communities but who remain within their country. .
Many refugees are forced to relocate because they are in danger of persecution on the basis of their race, religion, nationality, ethnicity, gender, or political views. Refugees make up a large number of people in the globe. Roughly one in five hundred people are refugees. Women and children make up a majority of refugees. IDPs are the fastest category of displaced persons. There are about fifty one million IDPs. Africa is the continent with the most IDPs. Many IDPs, like refugees, live for extended periods in makeshift housing or refugee camps with limited access to basic amenities such as latrines, health care, and schools. IDPs do not cross country boundaries, for that reason they are not under the purview of the United Nations or other international bodies. Political violence and conflicts over access to critical resources are major causes of people becoming IDPs. But other factors come into play as well, including natural disasters and large-scale development projects. Dam construction, mining and other and other projects have displaced more than 80 million people since 1950. Forced migration due to development projects is called development induced displacement. .
Third a major factor for migrants around the world is Institutional migrants. They are people who move into a social situation, either voluntarily or involuntarily. They include monks or nuns, the elderly, prisoners, boarding school or college students, and soldiers.
