What was America's attitude after the War of 1812?​

no significant change

Explanation:

With the end of the War of 1812, the Native Americans could no longer count on Great Britain to shield them from the flood of white settlers headed west. ... In the years after the War of 1812, new states north and south entered the Union. At the same time, America's economic engine was fueled by King Cotton

Explanation:

hope it helps

an effect of the steamboat's popularity was that people began building canals in the united states and europe. this was done to find another way to transport goods across the country and in that time, transportation using the river was very slow and dangerous. it depended entirely on manpower and the current of the river. that all changed in the late 1700's when steamboats were introduced. they soon revolutionized travel and trade through the river and dominated the waterways. eventually, other means of transportation took over from the steamboats, but there was a time that they the united states to expand to the west.

some american cities felt workers were being oppressed by business monopolies