Globalization and disease Spanish soldiers introduced smallpox by contact with natives of the Aztec capital Tenochtitlan. A devastating epidemic broke out among the indigenous people, killing thousands. In 1617, smallpox reached Massachusetts, probably brought by earlier explorers to Nova Scotia, Canada.” By 1638 the disease had broken out among people in Boston, Massachusetts. In 1721 people fled the city after an outbreak, but the residents spread the disease to others throughout the thirteen colonies. Smallpox broke out in six separate epidemics in the United States through 1968. The smallpox vaccine was developed in 1798 by Edward Jenner. By 1979 the disease had been
Mexican Armed Forces called "The dirty war" in the 1960s, which included the 1968 Tlatelolco massacre of students and unsuspecting bystanders. After 1980 these types of operations had nearly completely ceased (see EZLN). DN3: (Defense against natural disasters). The Army should always be ready to help the civil population in case of disaster. This includes preventive measures. For example, between August and November, military forces are sent to Mexican coastal areas to aid the public in the event of hurricanes or floods. For the Mexican people, the DN3 plan is the most important peacetime operation of the Army. The Army provides food, shelter,