Major Mexican drug cartels trace their organizational roots back about 40 to 90 years. While smuggling across the U.S.-Mexico border has existed since the early 1900s, the modern, large-scale cartel system emerged in distinct phases during the 20th century. [1, 2, 3, 4]

Key Timelines of Major Cartels:

• The Gulf Cartel (80+ years): Founded in the 1930s by Juan Nepomuceno Guerra, it began by smuggling alcohol during Prohibition before expanding into narcotics, eventually becoming a massive trafficking syndicate. [1]
• The Sinaloa Cartel (50+ years): Taking shape in the late 1960s as a loose syndicate of rural farmers led by figures like Pedro Avilés Pérez, it exploded in the 1970s and 80s, serving as the training ground for Joaquín “El Chapo” Guzmán. [1, 2]
• The Guadalajara Cartel (Late 1970s): Founded between 1978 and 1980 by Miguel Ángel Félix Gallardo, this was the first “federation” that united various smuggling territories. When Gallardo was arrested in 1989, his empire splintered into the major organizations of today, including the Tijuana, Juárez, and Sinaloa Cartels. [1, 2, 3, 4]
• Modern Offshoots (10 to 20 years): Newer and highly militarized cartels like Los Zetas—originally formed in the late 1990s as the armed wing of the Gulf Cartel—officially broke away and became their own syndicate around 2010. Meanwhile, the CJNG (Cartel Jalisco Nueva Generación) formed as recently as 2010. [1]

If you are interested in the evolution of these organizations, I can provide:

• Specific timelines on when a particular cartel was founded
• Details on how their business models transitioned from marijuana to cocaine and synthetic drugs
• The historical background of cartel conflicts in specific Mexican regions [1, 2]

Let me know if you would like to narrow down the information to a specific group.