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The correct answer is C. It was the first large- scale in Soviet Victory.
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Because Alexander had other ideas than Thomas
The correct answer is Malaria
Malaria was a huge problem since it couldn't be treated and people mostly died from it. It prevented numerous explorers from venturing into places like Africa where Malaria was running rampant due to the huge amount of mosquitoes. When it was discovered, it enabled numerous people to live at ease because they could not live with the disease or prevent getting it.
The peak of the Ottoman Empire was the year 1683, when it had conquered a big portion of Europe and almost reached Vienna. The fact that it did not manage to conquer Vienna was the beginning of its demise.