Colonialism always involves the migration of people from a metropolitan state to asatellite region, but the magnitude of settlement differs from case to case.
Colonialism is a rather elusive concept.
It is both a political, a legal, an economic, a cultural and a social phenomenon which does not lend itself to a short and clear definition. Similarly, citizens from the metropolitan state continue to make a distinction between themselves and the original inhabitants of the colony. Nationalism is redefined as a purely global structure. Within this, it is suggested, the number of states tends to fall to an equilibrium number which is itself falling, this number of states being the current best approximation to a single world state. Together, as the nationalist structure, they formally exclude other world orders.