The telephone let people communicate from a long distance. The light bulb was an easier way of seeing than candles were. Hope this helps!
Slavery was common in the ancient world. However, as opposed to the slavery of African-Americans, in the ancient world slavery was not a concept tied to any race, anyone could become a slave, regardless of their color.
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The Romantic movement of 19th century art and literature was influenced by revolutionary events such as the French and American revolutions. The 18th century Romantic poets were influenced by many outside influences but chief among them was the revolution occurring in France.
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