Population history of indigenous peoples of the Americas scope of the epidemics over the years was tremendous, killing millions of people—possibly in excess of 90% of the population in the hardest hit areas—and creating one of "the greatest human catastrophe in history, far exceeding even the disaster of the Black Death of medieval Europe", which had killed up to one-third of the people in Europe and Asia between 1347 and 1351. One of the most devastating diseases was smallpox, but other deadly diseases included typhus, measles, influenza, bubonic plague, cholera, malaria, tuberculosis, mumps, yellow fever and pertussis, which were chronic in Eurasia. This transfer of disease between the
Mexican Special Forces (Marines). They are known to train with their American counterparts: the Navy SEALs, at the Naval Special Warfare Center in Coronado, California. Mexican Special Forces In Mexico both the Army and Navy have special forces groups or elite units. The Army has a Special Forces Corps unified command consisting of three Special Forces Brigades, a High Command GAFE (Grupo Aeromóvil de Fuerzas Especiales) group, a GAFE group assigned to the Airborne Brigade and several Amphibious Special Forces Groups. The Special Forces Brigades are formed by nine SF battalions. The First Brigade has the 1st, 2nd and 3rd SF Battalions, the