In general, the world's developed nations, owing to the advanced development of their economies and scientific technology, have experienced high levels of tourism demand and supply. Tourist facilities and services have been expanded and developed around the world to meet the rising demand of travelers from developed countries. But, the unbalanced levels of economic growth among different countries have led to disparities in tourism development. In developing countries, the low level of economic livelihood restricts the development of a domestic tourism industry. This is true even in those countries with a strong international tourism sector. Most of the people in the developing world are still struggling to make ends meet. Thus, leisure travel for them remains a distant dream.