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Harold Adams Innis (November 5, 1894 – November 8, 1952) was a Canadian professor of political economy at the University of Toronto and the author of seminal works on media, communication theory and Canadian economic history. The affiliated Innis College at the University of Toronto is named for him. He helped develop the staples thesis, which holds that Canada's culture, political history and economy have been decisively influenced by the exploitation and export of a series of "staples" such as fur, fish, wood, wheat, mined metals and fossil fuels.