The period of post-industrial migration emerged during the 1960s and constituted a sharp break with the past. Rather than being dominated by outflows from Europe to a handful of former colonies, immigration became a truly global phenomenon, as the number and variety of both sending and receiving countries steadily increased and the global supply of immigrants shifted from Europe to the developing countries of the Third World. Whereas migration during the industrial era brought people from densely settled, rapidly industrializing areas to sparsely settled, rapidly industrializing regions, migration in the post-industrial era brought people from densely settled countries in the earliest stages of industrialization to densely settled post-industrial societies