There were many reasons. For starters, it involved getting rid of a large number of Native Americans, and while some supported this, others opposed it as they were peaceful. Another thing was that this meant the introduction of new states and it deepened the division based on whether the states should be slave states or non-slave states. Also they involved war with Mexico and some wanted this and some didn't.
Answer:
Youth culture Hope this helps
Explanation:
They connected the western region of the United States to the industrial revolution creating greater populations and comerce in that region of the country
The Industrial Revolution, which began in Great Britain, ushered in a new era of economic prosperity for many people. Through higher employment rates in factories, the income of the average citizen rose. This income was then used to purchase goods, which required more factory workers, which further increased income.