(1) Embryonic stage (from the 16th century to the mid-18th century). Factors such as the Great Geographical Discovery further improved the social division of labor

(2) Formative stage (1860s) to the 1860s), this period saw the first industrial revolution centered on Britain, which promoted the formation of an international division of labor centered on Britain.

(3) Development stage (from the mid-19th century to the Second World War). During this period, the second industrial and industrial revolution broke out in the capitalist world.

Promoted the new The rapid development of the international division of labor.

(4) The deepening stage (after World War II), due to the rise of the third industrial revolution, each colony became independent, the capital export situation changed, and some societies Socialist countries were established and participated in the international division of labor. New changes have occurred in the international division of labor.