Olonization and its impact on historical geography of north america

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This essay is based on the topic which i chose for the previous assignment which is the impact of colonization to the historical geography of North America. This assignment must include 2 primary sources and 4 secondary sources. The research topic should be narrow down by 1) making a specific argument that focuses on a particular aspect of the topic (ex. discuss the impact of european fishery on the historical geography of area of new found land) 2) using a specific case study or case studies (ex. fur trade etc.) 3)focusing on a particular time period (ex. only focus on the case for 18th or 17th century).