when frederick jackson turner said in his famous thesis, essay. he said the frontier closed. therefore, america changed because the frontier had made america. he talked about the west. the west, of course is where the frontier was. i want to say tonight this is really about the midwest. frederick jackson was from wisconsin in the midwest. our first version of the frontier thesis was downgraded was dumbraided in kansas city by a man who worked with thomas hart benton, who himself invented the thesis of manifest destiny. he was when the leaders of kansas city, one of the people one of the people who helped create the move to put the bridge over the missouri river which created kansas city. he also helped found oregon. he took the oregon trail and was the first governor appointed by lincoln of colorado. but he wrote books about this thesis. westward, the path of empire. in his thesis he said there is a temperate zone of the world and empire is moving constantly from the east to the west. from china to the european countries to america, and eventually will stop. his thesis was th