Tham khảo tài liệu 'new headway pre-intermediate john and liz soars_7', ngoại ngữ, ngữ pháp tiếng anh phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Tobacco For thousands of years tobacco was used by the American Indians with no ill-effect. In the 16th century it was brought to early tobacco was mixed with soil and rather dirty. It was chewed or smoked in pipes only by men - women thought it smelly and disgusting. It was first grown commercially in America in the 17th century on slave plantations. In the 18th century new technology refined tobacco and the first cigarettes were produced. By the 1880s huge factories were producing cigarettes which were clean and easy to smoke. Chain-smoking and inhaling became possible and by the middle of the 20th century tobacco addicts both men and worpen were dying of lung cancer in great numbers. Nowadays cigarette smoking is banned in many places especially in the USA. But until 1820 tobacco was America s main export and still today their tobacco industry makes over billion a year. Cotton Sugar Sugar cane was grown in India thousands of years ago. In Roman times it was known in Europe as a great luxury and it was rare and expensive for many centuries after that. In 1493 Columbus took a sugar plant with him to the West Indies where it grew so well that huge plantations were started by Europeans and worked on by slaves. The slaves were shipped across the Atlantic from Africa packed sometimes one on top of the other in chains on a journey that took six weeks. Many empty ships then carried the sugar back to Cotton has been grown for over five thousand years in places as far apart as Mexico China Egypt and India. It was first planted in America in 1607. Before 1800 cotton was a great luxury more expensive than silk because so many workers were needed to pick it. However a huge increase in the number of slaves in the American South resulted in much greater cotton production and a fall in the price. This and the new technology of the industrial revolution made cotton the cheapest fabric in history. By 1820 cotton was making more money for the USA than .
