The term Manifest Destiny was first used in 1845 by New York City journalist John Louis O’Sullivan. He used the term in the context of America’s annexation of the Republic of Texas. Manifest Destiny represented the idea that it was America’s right — its destiny, in fact — to expand across all of North America. Politicians and citizens in the United States called for the US to expand by claiming control of British territory. This included the Province of Canada (formerly Upper Canada and Lower Canada), New Brunswick and Nova Scotia.