As in Phoenicia, pressure created by the narrow limits of the home country coincided with an adventurous desire to seek new sources of wealth beyond seas; but very many Greek emigrations were caused by the expulsion of the inhabitants of conquered cities, or by the intolerable domination of a hated but triumphant faction within the native state.
There are frequent emigrations to Celebes and other parts of the archipelago.
The successive emigrations and occupation of the Alpine region by divers Teutonic tribes from the 5th to the 6th centuries are, too, known to us only in outline, while to them, as to the Frankish kings and emperors, the Alps offered a route from one place to another rather than a permanent residence.
They returned to glens desolate of men, deserted, first, by the voluntary emigrations of the clans, and later by forced emigrations in the interests of sheep farms and deer forests.