B, founded the Niagara Movement
Because America was founded on a promise of freedom and the citizens of America still love the freedom and don't want communism where the people don't have freedoms.
In most empires, trade is important as it is a vital interaction for every country in the world. Without trade, countries would have to provide their own resources for every aspect in their daily life. Take for instance items such as food, clothing and technology.
The correct answer is An era of nationalism and economic growth
After the war of 1812 Americans felt proud of their country and a strong sense of belonging. Also during the war, the British government cut America’s access to manufactured goods and this forced America to somehow gain strength and produce those products internally what made the country gain economic independence.