Answer:
The cities have a much larger populations in smaller areas, which can cause more crime and overcrowding, along with pollution.
I believe it is Answer D :)
Answer:
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.
Explanation:
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<span>Cyclone low-pressure storm of high winds that develop over water are called : Tropical cyclone.
During this process, the rotating storm happened within a closed -low level atmospheric circulation with spiral arrangement of thunderstorm, which will resulted in heavy amount of rain.</span>
Answer:
It allows for easier access to other South American countries for trade.
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