Indigenous peoples of the Americas Smallpox killed from one third to half of the native population of Hispaniola in 1518. By killing the Incan ruler Huayna Capac, smallpox caused the Inca Civil War of 1529–1532. Smallpox was only the first epidemic. Typhus (probably) in 1546, influenza and smallpox together in 1558, smallpox again in 1589, diphtheria in 1614, measles in 1618—all ravaged the remains of Inca culture. Smallpox killed millions of native inhabitants of Mexico. Unintentionally introduced at Veracruz with the arrival of Pánfilo de Narváez on April 23, 1520, smallpox ravaged Mexico in the 1520s, possibly killing over 150,000 in Tenochtitlán (the heartland of
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