| | CATHOLIC ENCYCLOPEDIA: Migration |
 | | In all such cases of migration en masse the native habitat was forever abandoned, and the migrating tribes, thoroughly equipped, entered a new environment and yielded entirely to new influences. |
 | | Such migration means to the emigrants the death of a nation, so far as concerns them, while to their new country it brings a serious modification, the extent of which depends upon the relative virility of the newly added national element. |
 | | In the last analysis, migration results when the forces of increasing population and decreasing food supply are not in equilibrium, and it tends to equilibration of forces among societies of men: equilibration of food in relation to population; equilibration of rights as related to authority; equilibration of industrial energy as between labour and capital. |
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