During the industrial revolution, more people were needed in factories than in farms. This migration from farms to cities was known as the business revolution.
It was probably something to do with there rival
The answer is Ohio, Illinois, Indiana, Minnesota, Michigan, and Wisconsin
That's because they were preparing for the biggest war in human history. This was the policy of militarism where building up a military was necessary to ensure that the people could fight against others. The number of soldiers in European armies increased twice in size in only 20 years between the 1890s and 1910s.
