Answer:
The War of 1812 changed the course of American history. Because America had managed to fight the world's greatest military power to a virtual standstill, it gained international respect. Furthermore, it instilled a greater sense of nationalism among its citizens.
While the War of 1812 had virtually no impact in England, it did assure the survival of the British colonies in Canada, and ultimately paved the way for the Canadian Confederation - the precursor to the nation of Canada.