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The ancient Greeks and Romans used dated references to eclipses to improve the calendar. They also noted phenomena related to eclipses. The corona seen during eclipses was only identified as a solar phenomenon in the middle of the 19th century.
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Most hearing parents of Deaf children rely on signing to communicate because they cannot afford hearing devices.
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Answer:The Indian Ocean enabled African trade, in addition to bringing. Portuguese invaders. Because trade brought new civilizations into contact with one another, the transfer of new technology often occured. Wich civilizations were in Central America? Maya and Aztec.
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