Answer:
That is important to contribute to the economic develop of the country.
Step-by-step explanation:
Immigration is a complex process where many people around the world is involved.
The main and real cause is that the people can not to live in theirs countries of origins and they try to survival moving to another nation.
The negative and positive results are subjects to discuss but spite of them there is one reason much power and it is the right gave from God to live freedom.