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Took place in the Roman Empire between 165 AD and 180 AD. Killed over 5 million people and was believed to be caused by smallpox or measles.
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Took place in Iran in 856 AD. The earthquake was a magnitude 7.9 and caused about 200,000 deaths.
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Took place in Greece and Africa on July 21, 365 AD. The earthquake is thought to be a magnitude 8 or greater and it destroyed nearly all the towns on the island. After the earthquake the tsunami occurred and in total it is believed thousands of people were killed.
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Took place in Naples, Italy on August 24, 79 AD. Pompeii and Herculaneum were both destroyed
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Took place on the islands of Santorini and Crete in ancient Greece in 1645 BC. There was widespread damage on both islands.
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Took place in Helike, Greece in 373 BC. The town still remains submerged in water.
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Took place in the Roman Empire in 541 AD. It was said to be caused by the Bubonic plague and the death toll was between 40 to 100 million.
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Took place in Antioch in 526 AD. It was estimated to be over a magnitude 7 and killed over 250,000 people.
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Took place in China. Because the winter storms were so brutal the 3 major rivers in central China flooded all at once and between 3.7 and 4 million people were either drowned or starved. All of this took place over the course of the winter, spring, and summer of 1931.
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It was a magnitude 9.5 and killed about 6,000 people. If they hadn't been prepared the death toll would have been even greater.