The three most important long term results that the War of 1812 has given was that it completely ended the British ambitions of remaking new colonies in the United States, as well the the United States trying to take over Canada. The second result is that it gave the United States an opportunity to expand to the west and make settlements that later on comes the Louisiana Territory comes in part. The third result was that the Tariff of 1816 giving off protection rights of forming the Industrial Revolution which helped out forming the economy drastically. The Monroe Doctrine as well helped the United Sates of giving regional power of gaining land from the Latin American countries. These result helped shaped the United States for the long run