Question: Who represented the university that hired the person who declated the closure of American frontier in 1893 during the rule changing debates?

<P0-S0> President Arthur Hadley of Yale, A. Lawrence Lowell of Harvard, and Woodrow Wilson of Princeton worked to develop moderate changes to reduce injuries. <P0-S1> In 1909–10, football faced a crisis resulting from the failure of the previous reforms of 1905–06 to solve the problem of serious injuries. <P0-S2> There was a mood of alarm and mistrust, and, while the crisis was developing, the presidents of Harvard, Yale, and Princeton developed a project to reform the sport and forestall possible radical changes forced by government upon the sport. <P0-S3> Their attempts, however, were reduced by rebellion against the rules committee and formation of the Intercollegiate Athletic Association. <P0-S4> The big three had tried to operate independently of the majority, but changes did reduce injuries. <SEP> <P1-S0> benjamin thomas biggs (october 1, 1821 – december 25, 1893) was an american farmer and politician from middletown in new castle county, delaware. <P1-S1> he was a veteran of the mexican–american war and a member of the democratic party, who served as u.s. representative and 46th governor of delaware. <SEP> <P2-S0> He was primarily known for his “Frontier Thesis.” He trained many PhDs who came to occupy prominent places in the history profession. <P2-S1> He promoted interdisciplinary and quantitative methods, often with a focus on the Midwest. <P2-S2> He is best known for his essay "The Significance of the Frontier in American History", whose ideas formed the Frontier Thesis. <P2-S3> Frederick Jackson Turner (November 14, 1861 – March 14, 1932) was an American historian in the early 20th century, based at the University of Wisconsin until 1910, and then at Harvard. <P2-S4> He argued that the moving western frontier shaped American democracy and the American character from the colonial era until 1890. <P2-S5> He is also known for his theories of geographical sectionalism. <P2-S6> In recent years historians and academics have argued strenuously over Turner's work; all agree that the Frontier Thesis has had an enormous impact on historical scholarship and the American soul. <SEP> <P3-S0> The rural Plains have lost a third of their population since 1920. <P3-S1> Many have fewer than 2 inhabitants per square mile (0.77 inhabitants per square kilometer). <P3-S2> There are more than 6,000 ghost towns in the state of Kansas alone, according to Kansas historian Daniel Fitzgerald. <P3-S3> This problem is often exacerbated by the consolidation of farms and the difficulty of attracting modern industry to the region. <P3-S4> In addition, the smaller school-age population has forced the consolidation of school districts and the closure of high schools in some communities. <P3-S5> The continuing population loss has led some to suggest that the current use of the drier parts of the Great Plains is not sustainable, and there has been a proposal - the "Buffalo Commons" - to return approximately 139,000 square miles (360,000 km2) of these drier parts to native prairie land. <P3-S6> Several hundred thousand square miles (several hundred thousand square kilometers) of the Great Plains have fewer than 6 inhabitants per square mile (2.3 inhabitants per square kilometer)—the density standard Frederick Jackson Turner used to declare the American frontier "closed" in 1893. <SEP> <P4-S0> although chancellor wrighton had noted after the 2004 debate that it would be "improbable" that the university will host another debate and was not eager to commit to the possibility, he subsequently changed his view and the university submitted a bid for the 2008 debates. <P4-S1> "these one-of-a-kind events are great experiences for our students, they contribute to a national understanding of important issues, and they allow us to help bring national and international attention to the st. louis region as one of america's great metropolitan areas," said wrighton.