Klonkdike Gold Rush and Atherton?

How did the Klondike Gold Rush and St. John Atherton might disprove portions of Turner's Thesis?





Thanks in advance for any help.
Klonkdike Gold Rush and Atherton?
In July, 1893, at the Columbian Exposition in Chicago, Illinois, Frederick Jackson Turner, a professor from the University of Wisconsin delivered a paper to the American Historical Association entitled “The Significance of the Frontier in American History.” Largely unnoticed for several years, this essay has become the most important paper written in its field. Turner’s thesis statement is simple, “The existence of an area of free land, its continuous recession, and the advance of American settlement westward, explain American development.” Overturning the then prevalent “germ theory” of American history, Jackson’s thesis has forced subsequent writers to consider the role of the frontier in the shaping of America’s character