Immigration to the north provided workers for production and replacements for soldiers killed or wounded.
I think its because they are trying there best to keep people like hunters able to legaly hunt but they actauly dont hunt
Answer:
US factories produced aircraft for the war effort.
US troops at the front relied on trucks to keep them supplied.
Explanation:
First, they made settlement of the West possible after the Civil War by connecting farmers (and miners, ranchers, loggers, and others) to markets.
Second, railroads helped to integrate different regions of the country economically.
