In 1890, in an attempt to preserve irreplaceable wilderness areas, the National Park System was created, beginning with Sequoia and Yosemite National Parks. In 1968, the National Trails System Act was
In 1890, in an attempt to preserve irreplaceable wilderness areas, the National Park System was created, beginning with Sequoia and Yosemite National Parks. In 1968, the National Trails System Act was