Definition - What does Immigration mean?
Immigration is when people enter a country with the intention of becoming permanent legal residents of that country. Immigration is different from emigration, which is the act of leaving one's native country. Every country has its own policies for legal immigration. However, many people attempt to immigrate illegally without regard to a nation's immigration laws.
Justipedia explains Immigration
There are many reasons why a person or a group of people may want to immigrate to a new country. For example, many Irish people immigrated to the United States during the Potato Famine of the 1800s to escape poverty and starvation. Political unrest and war are other reasons why people immigrate. Sometimes, people simply want to start a new life in a new country. In order to become full citizens of a country, immigrants must be given full citizenship by the host nation. Earning this right can involve going through a process.