Step-by-step explanation:
The presence of a large number of previous movers in a country creates both disadvantages and advantages.
Consider the disadvantages: Since we have a large population of immigrants who are active in the labor force, this may lead to an increase in the supply of labor, and with such an increase in supply there may be a decrease in the wage rate of the country; so the subsequent movers may earn lesser than expected.
Consider the advantages: Remember, if these previous movers come from countries with similar cultures as the subsequent movers they may find their move less costly since they acquire new friends who share the same culture with them.