Industrialization created new jobs which helped to cause Urbanization, transportation and communication allowed goods to move to new markets, steamboat moved goods and people quickly, manufacturing, raw materials, and Bessemer steel process improved productivity.
It marked the turning point because it’s a union battle and it would be a win for the north not the south.
Hope this helps.
The Mexican war led to the capture of Arizona, New Mexico, Texas, and a part of California. Hope this helps.
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