06. March 2017 [Unit3] Frederick Jackson Turner's "Frontier thesis": The Significance of the Frontier in US History: Here is the video we worked on today. We stopped at 1'47, but now you have to watch the wholde video and to add a few elements to your notes to better understand this "Frontier thesis". Youtube content is not displayed due to your cookie settings. Click on the functional YouTube cookies in the cookie banner to agree to load and display content from YouTube. tagPlaceholderTags: 1è2016, unit3