Nowadays many developing countries are increasingly expanding their tourist industries. Nowadays many developing countries are increasingly expanding their tourist industries. Why is the case? Is it a positive or negative development? Recently, the tourist industries are being dramatically expended in lots of developing countries. In my opinion, there are two main causes about this situation, one is the economic income and the other is that those countries want to let other people understand them more clearly. Actually, most developing countries need to create more opportunities to make money, and the tourist industry is a very suitable choice for them. For example, as some South East Asia countries, they do not own abundant natural resource, but they have incredible beautiful scenery which can attract millions of people come there every year. Clearly, the tourist industry can make their gross domestic product increase dramatically. On the other hand, I consider that those countries want to use tourist industry to express their national image and the most important is that they can make the foreign people understand them more clearly and to clean up some misunderstanding. As for the effect of expending tourist industry in developing countries, I think that was a positive development if the government can protect the environment and the traditional buildings. You must understand that if too many people come to a scenery spot just like Forbidden City, they might destroy the old buildings. For example, some of the tourists throw out their rubbish or carve some words on the walls. That was so terrible. Therefore, if the government can introduce laws to stop those conducts, I think that was a good thing for everyone. In conclusion, increasing expending tourist industries is beneficial for developing countries, and I hope that tourists can protect the heritage of human being. (next month i want to take part in an Ielts, so i hope you can give me some advices about that whether i answer the question completely。thank u ！)