Jean Danhong Chen - Migration is an extremely complex demographic phenomenon that<br />responds to various causes that are very difficult to determine, especially because<br />due to irregular migrations or disguised as tourist activities or<br />otherwise, quantitative data are difficult to obtain, especially in the<br />case of underdeveloped countries. <br /><br />Jean Danhong Chen -They respond to the general concern of<br />human beings to always seek a better place and quality of life for him and his<br />family.
