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Smallpox has had a major impact on world history, not least because indigenous populations of regions where smallpox was non-native, such as the Americas and Australia, were rapidly decimated and weakened by smallpox. During the 18th century the disease killed an estimated 400,000 Europeans each year, including five reigning monarchs, and was responsible for a third of all blindness. After successful vaccination campaigns throughout the 19th and 20th centuries, the WHO certified the global eradication of smallpox in December 1979. Smallpox is one of two infectious diseases to have been eradicated.
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first one
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flat maps can be used for that, 3d maps would have mountains, rocky terrain, etc.
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B. Rapid development of technology.
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Airplanes were not a thing yet. Railroads were still the main form of transportation at that time.
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1. There are three types of tectonic plate boundaries and they includes:
- When two plates slide past each other, they form a <u>transform boundary</u>.
- The <u>divergent boundary</u> occurs when two plates pull away from each other.
- When two plates collide with each other, they formed a <u>convergent boundary</u>.
2. The newest parts of the Earth’s crust is located at mid-ocean ridges.
- The mid-ocean ridge refers to the seafloor mountain system formed by plate tectonics and are the newest parts of the Earth’s crust.
3. Not every earthquake has a foreshock, but every earthquake has aftershock that occur in places far away from the mainshock.
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<em>brainly.com/question/16177163</em>
