https://creativecommons.org/publicdomain/zero/1.0/ https://www.rawpixel.com/image/2041627 Map of South America, showing its political divisions; Map showing the proposed Atrato-inter-oceanic canalroutes, for…

Map of South America, showing its political divisions; Map showing the proposed Atrato-inter-oceanic canalroutes, for connecting the Atlantic and Pacific oceans (1863) by Samuel Augustus Mitchell. Original From The New York Public Library. Digitally enhanced by rawpixel.

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