Most 15th century Europeans believed that the world was flat and that a ship could conceivably sail off the end of the earth__________ many sailors of the time refused to venture forth with explorers into unknown waters.
________ the secret of how to make silk remained inside Asia, Europeans were forced to pay incredibly high sums of money for this mysterious material to be brought over land to Europe.
Ancient Egyptians mummified their dead through the use of chemicals, ______ ancient Peruvians mummfied their dead through natural processes by putting dead bodies in extremely dry desert caves.
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