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 Armed Forces following the sinking of two Mexican ships by U-boats. In 1990, President Carlos Salinas de Gortari asked the permission of the Congress to send troops to the Gulf War, but it was refused, since there was no declaration of war against Iraq. DN2: Preparation of the military forces to protect the internal security of the country. This would include police actions against guerrilla forces, counter-drug operations, and, originally, political control. Up to 1970, the Mexican Army had been used as a repressive force to maintain the virtual ruling party PRI government. The most controversial use of the military had been