Machine summary:
B) The World-System Theory and International Labor Migration Some theorists like Elizabeth Mclean Petras and Lydia Potts believe that independent economies are not sufficient to explain migration.
Instead, they believe that migration relates to the development of a modern capitalist world economy.
We can see that Petras and Potts implicitly introduce a kind of systematic concept for migration that involves capital accumulation and this concept has been generated from the emergence of a capitalist world economy.
Capital requires the sufficient supply of labor power, which it demands.
Spatial labor transfer is an essential form as a global labor supply for expansion of the capitalist world-economy whose effective force is the accumulation of capital.
Capitalist world economy expansion has brought about the incorporation of independent societies into the system.
In comparison with orthodox explanations, the capitalist world system has more power to explain the different kinds of migrations.