According to the story of Roman Gods, Vulcan was the god of fire.↵
His father was Jupiter, the king of the gods, and Juno was his mother, the queen of the gods.↵
Having Jupiter and Juno as parents, Vulcan was expected to be quite handsome, but baby Vulcan was small and ugly.↵
Juno was so surprised that she threw the baby on the top of Mount Olympus, the home of the gods.↵
Vulcan fell down for a day and a night.↵
Thetis, a sea-nymph, found him and treated him as her own son.↵
Vulcan lived in Mount Etna on the island of Sicily.↵
He worked in a shop inside a volcano.↵
Using the fire from a volcano, Vulcan was able to make very powerful weapons for Roman gods, but he was kind and peaceful.↵
He married Venus, the goddess of love and beauty.↵
It was said that whenever Vulcan fought with his wife, he became so angry that sparks and smoke rose up from the top of the mountain, creating a volcanic eruption.

Before coins or paper money, people exchanged fish for stone tools or leather goods for wood.↵
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This method of exchanging one thing for something else is called bartering.↵
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It is still in use today.↵
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Sue might agree to fix Ramon's computer if Ramon agrees to take care of her dog for a day.↵
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They have exchanged services.↵
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Compared with bartering, money is much more convenient.↵
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It can be used in most situations.↵
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In a barter, each individual must have something to exchange.↵
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But, if you use money, you can exchange the service with money.↵
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For example, Sue and Ramon can agree to exchange computer work for pet sitting,↵
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but Harold, another computer repairman, might insist on being paid in dollars and cents.↵
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He can then spend the money on anything he wants.

다음은 요청하신 대로 문장을 한 줄씩 쪼갠 것입니다:↵
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There are about 6,000 languages in the world at present.↵
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Experts say, however, half of the world's languages will have disappeared by 2050.↵
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Some say that 90 percent of languages could be extinct by 2100.↵
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Languages are becoming extinct at twice the rate of endangered animals!↵
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Languages die for many reasons, and it happens when they are not passed on to the next generation.↵
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For example, school children in Alaska are learning only two out of 20 native Alaskan languages.