Commonly referred to as the "Pennsy," the PRR was headquartered in Philadelphia<span>, Pennsylvania. The PRR was the largest railroad by traffic and revenue in the U.S. for the first half of the twentieth century.</span>
Question: Study the map below. Based on the information shown on this map, Mongol invasions under Genghis Khan and his successors began in which city?
Answer: The correct answer would be "Karakorum".
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Answer: Spanish settlement resulted in much suffering and hardship; it turned many Native Americans into slaves and killed millions of them through battle, mistreatment, and disease.
Explanation: