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According to the Canadian Museum of History, one of the primary ways geography affected early civilizations was in determining the location of settlements.<span> Since early humans needed access to water and fertile ground for agriculture, cities tended to spring up along rivers and flood plains. In addition, geographic features such as mountains frequently served as barriers and provided natural borders between civilizations</span>
It's number 4.
Marshall instituted the process of judicial review and, subsequently, positioned the judicial branch as equal to its partners in the American government: the legislative and executive branches.