The most intense rivalry between any two countries at international level is between Argentina and Brazil. These encounters, of which there have been over one hundred, are similar in number to the matches between Argentina and Uruguay, but are now the most intense in South America. This is due not to past political conflict but to these countries being regarded as the greatest footballing nations of the Americas. During the twentieth century, this sporting hostility gave rise to several conflicts, culminating in brawling between players, supporters, and police during the final of the 1946 South American Championship. The Superclásico de las Américas, an annual friendly encounter between the national teams of Argentina and Brazil, was held for the first time in 2011.