In 1914, Theodore Roosevelt — at that point a former U.S. president — trekked upon a previously unmapped tributary of the Amazon River in Brazil. To honor his heroism, Brazil officially named the Rio Duvida (or River of Doubt) the Rio Roosevelt. Did the new name last to the present day? Yes it has.
River of Doubt Now on Brazil’s Official Maps (PDF)
From Sunday, March 4, 1917
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