How did the relationship between great britain and the united states change from 1800-1848?

The War of 1812.

A war between the US and G. Britain caused by American outrage over the impressment of American sailors by the British, the seizing of American ships, and British aid to the Native Indians attacking the Americans on the western frontier. All this enhances the feeling of nationalism among the Americans and caused the war of 1812.

The significance of the result is the change