CONMEBOL Copa América, known until 1975 as the South American Football Championship, is a men's international football tournament contested between national teams from CONMEBOL. It is the oldest international continental football competition. The competition determines the continental champion of South America. Since the 1990s, teams from North America and Asia have also been invited to participate. Since 1993, the tournament has generally featured 12 teams – all 10 CONMEBOL teams and two additional teams from other confederations.