밑줄 친 it 이 가리키는 대상이 나머지 셋과 다른 하나는?Black … | [법원직 9급 영어] 17년 1회차 기출문제 상세 페이지

밑줄 친 it 이 가리키는 대상이 나머지 셋과 다른 하나는?
Black pepper is one of the most widely used spices in the world. At first, it was cultivated in India as a simple ingredient for cooking. However, ①it became a lot more important to some Europeans who also used it for keeping meat from going bad. Until the 15th century, some cities in Italy were the center for trading black pepper. As the Ottoman Empire in the Middle East grew stronger in the 16th century, however, ②it forced the European traders to pay them a high tax. This made black pepper so expensive that only a few rich people could afford ③it. In some parts of Europe, black pepper was even considered as valuable as gold. The great demand for ④it caused Europeans to search for new sea routes to India.

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