Final answer:
Internally displaced people (IDP) are those who are forced to flee their homes due to conflict, persecution, or natural disasters but remain within their country's borders, posing challenges for their home countries in managing and protecting these populations.
Step-by-step explanation:
A population that is forced to flee their homes while remaining within their country's borders is referred to as internally displaced people (IDP). The UN Refugee Agency (UNHCR) has reported that due to reasons such as conflict, persecution, or natural disasters, millions of individuals worldwide are displaced within their own countries. Unlike refugees or asylum-seekers who cross international borders, internally displaced people do not leave their country. The displacement of such individuals creates significant challenges for their home countries as they must manage large populations in need of assistance and protection without the geographical removal of these populations from the political and social landscape of the country.