Generally it is called emigration.
People moving from one country, region, or place to another is called migration. Migration can be due to various reasons such as economic opportunities, political instability, or seeking a better quality of life.
When people are forced to move, it is typically referred to as displacement. This can happen due to various reasons such as conflict, disasters, or political persecution.
People may move to another country for reasons such as better job opportunities, higher quality of life, education, family reunification, political stability, or seeking asylum from persecution or conflict in their home country.
Nomads or wanderers are terms often used to describe people who move around frequently or have a transient lifestyle.
People choose to move for various reasons, such as job opportunities, better quality of life, education, family reasons, or a change in scenery. Some may also move for financial reasons or to escape from negative aspects of their current location.
They are called 'emigrants'. In the new country they are 'immigrants'
Immigrants. If you move to another country, you emigrate.
immigrants
Migrating
it is purely for their career and for the future of their next generation
People who move from one country to another are called immigrants or expatriates, depending on their legal status and purpose of moving.
As people do elsewhere. Road, rail, air, etc
They are called refugee's.
When people move from one place to another it's called Human Migration.
When people move from one place to another it's called Human Migration.
If people move out of their native country due to a war are called Refuges
It's called two things: immigration or migrating.