Darwin toured to the ______ which helped him arrive at his theory of "Natural selection".
Galapagos Islands
Darwin toured in the Beagle ship and spent around 5 long years in the South American Islands called the "Galapagos Islands". These islands had a rich biodiversity among which Darwin chose around 15 species of a type of bird, called Galapagos finches, for his study to arrive at the theory of "Natural selection" as a conclusion.