Medellín Cartel
The Medellín Cartel (Spanish: Cártel de Medellín) was a confederation of Colombian drug trafficking organizations based primarily in Medellín, Colombia, that played a central role in the expansion of the international cocaine trade during the late 1970s and 1980s. Rather than a single hierarchical organization, contemporary law-enforcement assessments and subsequent scholarship describe the cartel as a network of semi-autonomous traffickers who cooperated in production, transportation, financing, and enforcement while retaining independent control over their respective operations.