One important area of global politics is contestation in the global political sphere over legitimacy. Dahl measures this democratization in terms of the country's endorsement and reception of public contestation. The form of nationalism resulting from the binary and its contestation is muscular nationalism. Achebe's main focus has been cultural ambiguity and contestation. Political contestation equated to political, economic, and social isolation and neglect. His "principal interests are in the political economy of environmental change, regulation and contestation". Hutchinson argues that the role of contestation in nation-formation has been neglected. Tiedemann was one of the first persons to make a scientific contestation of racism. Subsequent contestation of the same matters made some of the issues a matter of authority. It is a medium of rebellious contestation rising from the underground. Subsequent contestation of the same issues made some of them a matter of authority. The information can improve the outcome of a patent or a patent contestation. The contestation about the prospective removal of the statue became national. Muskie's first contestation for the Senate of the United States was in 1958. In the 1920s, Saigon was the center of open anticolonial contestation in Vietnam.