Although the conservation movement developed in Europe in the 18th century, Costa Rica as a country has been heralded its champion in the current times. Costa Rica hosts an astonishing number of species, given its size, having more animal and plant species than the US and Canada combined while being only 250 miles long and 150 miles wide. A widely accepted theory for the origin of this unusual density of species is the free mixing of species from both North and South America occurring on this "inter-oceanic" and "inter-continental" landscape. Preserving the natural environment of this fragile landscape, therefore, has drawn the attention of many international scholars.