Đọc đoạn văn sau và trả lời các câu hỏi. Jeans are considered to be the most popular kind of clothing in the world. They are popular almost everywhere and with everybody because they are not just practical but very fashionable as well. But what do you know about the history of jeans? Who made the first jeans? In 1850 Levi Strauss, a young immigrant from Germany, arrived in San Francisco. He came to sell canvas, a heavy fabric used for tents, to gold miners. One day Strauss saw that the miners needed strong clothes for work. He quickly took some of his canvas and made it into pants. These pants were very strong and lasted a long time. The pants became very popular immediately. Later Strauss wanted to make his pants even better, so he started making his pants from cotton cloth that was softer than canvas but just as strong. This fabric came from Nimes, a city in France, and was called ‘denim’ (from de Nimes). Denim was popular in the fifteenth century. Christopher Columbus used denim for the sails of his ships. Sailors in Genoa, Italy, wore denim pants. The word ‘jeans’ comes from the word ‘Genoa’. Mr. Strauss made the first jeans in the United States, but their name and their kind of cloth came from Italy and France.

Why do jeans become popular?