Due to following reasons people move from one country to another
(i) People generally move from one country to another in . search of better living standard.
(ii) They move from one country to another in search of better jobs.
(iii) They also move for the purpose^of better education.
Due to following reasons there has been slow movement of people during past few decades
(i) In the past few decades, there has not been much increase in the movement of people between countries due to various restrictions.
(ii) There was not much involvement of issue.
(iii) Information and communication technology was not so developed.