THE NEW IMMIGRATION
HISTORY is full of instances in which invading armies have moved so swiftly that the record shows them to have been in full military occupation of the penetrated country in an exceedingly short space after crossing the border. It is now to be noted that the industrial occupation of New England was hardly begun by aliens from the Eastern hemisphere before it was accomplished.
Heretofore historians have given much attention to military operations conducted on a grand scale as marking political eras. It is not improbable that in doing this they have slighted the political significance of great industrial movements which have affected large aggregations of people. However this may be there is no reason why political revolution or evolution should not result from industrial as well as military causes, and it is undoubtedly true that no military incursion could have more profoundly affected the political future of the Puritan Commonwealths than the advent of European labor.