Deportacion
In short
Deportation is the formal removal of a foreign national from a country by legal authority. This usually happens when a person breaks immigration laws or commits a crime.
In plain words
It is when a government forces someone to leave the country they are currently living in. This often occurs if the person does not have the correct visa or has stayed too long.
A simple example
A person enters a country on a tourist visa but stays to work illegally for three years. The government finds out and orders them to return to their home country.
Why it matters
It is a key part of how nations control their borders and enforce their laws. It affects international relations and the rights of people living abroad.
Easy to mix up
Do not confuse it with extradition, which is when one country sends a person to another to face criminal charges.