INTERNATIONAL JOURNAL OF TOURISM, TRAVEL AND HOSPITALITY LAW of proposing sophisticated and new tourist products for customers with high purchasing power focused on: - fitness and health, - access to aquatic and playful sets, - protection and enhancement of the environment. The impact of tourism on economic development in the main tourist countries must be able to come under real industry strategies, as shown by the "cluster" strategies which are the most widely used today. In this case, the direct and indirect effects of tourism on other sectors of economic activity, mainly agriculture and industry, are essential. However, this policy requires considerable financial resources and the mobilization of international credits, particularly in the case of newly industrialized countries and developing countries. 5. CLIMATE CHANGE AND THE QUESTIONING OF THE TOURIST ADVANTAGE International tourism specialization is largely based on the comparative advantages available to each country and tourist destination. The success of international tourism specialization is largely based on strategies aimed at enhancing comparative advantages based on both competitiveness and differentiation. Climate change has very significant effects on the evolution of comparative advantages and can lead to their being called into question. 5.1 The climate and the evolution of tourism comparative advantage The tourist comparative advantage is formulated by the specialization in a production of service for which a country has a strong competitiveness in terms of quality/price ratio and productivity in comparison with the destinations of the competing countries. This economic theory of international specialization initiated by the economists of the classical school Adam Smith, David Ricardo and Robert Torrens is still the basis of the policy of the WTO (World Trade Organization) for the promotion of international trade in goods. and services. Its importance is essential for both explaining and also predicting the evolution of international tourist flows in the world. Climate is an important factor in the tourism industry as it can influence tourists' decision on where to travel. Destinations that offer a pleasant climate often have a comparative advantage in the tourism industry, as they attract more tourists. However, climate change has an impact on the tourism comparative advantage of some destinations.
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