The C Guadalajara Cartel was a powerful drug trafficking organization based in Guadalajara, Mexico during the late 1970s and 1980s. It played a significant role in the smuggling of marijuana and cocaine into the United States, establishing routes that would later be used by other cartels. The cartel was known for its connections to various criminal networks and its influence over the drug trade in Mexico. Key figures in the cartel included Miguel Ángel Félix Gallardo, who is often referred to as the "Godfather" of Mexican drug trafficking. The cartel's operations began to decline in the late 1980s due to law enforcement efforts and internal conflicts, leading to its eventual fragmentation into smaller groups, including the Sinaloa Cartel and the Tijuana Cartel.