Answer:
Many migration movements are often forces that operate for good when goverments and policies are encouraged with good will and the process become fueled by institutions, given recognition to the migrants rights.
However the forces driving migrants often are wars, economic or natural disasters, thus it is a challenge to the states who strive and mass migration movements generate waves of people that lack the conditions for settling and often lead to social chaos , xenophobic movements and rise of the extreme right parties and policies. Lets discuss a case:
Step-by-step explanation:
migration often provides labor force in replacement or abscence of young working population to developed countries with aged population (the case of Germany).
migration often leads to problems as cultural clash occurs when migrants are unable to be assimilated (Turkish migrants unwilling to learn German language and respect the laws or Christian embedded practices).