The correct statement evaluating the cause of increased migration to the U.S. based on the population distribution shown in the table is:
There was overseas migration from Europe and Asia to U.S. port towns.
This conclusion is supported by the trends in urbanization in the table, particularly in the increased percentages of urban populations, which correspond with waves of immigration from Europe and Asia during the Industrial Revolution period, leading more people to settle in urban areas associated with port towns and industrial centers.