Tourism has evolved as the world largest industry growing rapidly in last twenty years, today it accounts for 6% of world output and employs more than 100 million people around the world. After the end of Second World War, it has developed immense revenue. Tourism is seen as unique natural renewable resource energy. The contribution of tourism can be seen very clearly on economy front. A study conducted by the United Nations has shown that developing nations can reap handsome benefit from tourism which greatly boosts national income Tourism generates employment and add to the wealth of a nation. It provides people with change of surrounding and breaks from their normal routine life. It brings people of different nationalities closer allowing them to know and understand each other cultures and tradition. It reveals the natural beauty of the country and its past heritage of a nation. Many tourist visit Egypt to know about its past heritage and its beautiful pyramids. It can help us to understand history, ancient civilizations of different countries; it can inculcate tolerance and peace around the globe. There are some disadvantages of tourism; it can cause social, cultural or environmental disruption. In process to attract more tourist sprawling resorts are built without taking into consideration of it ecological impact on the environment. Natural system such as forest is destroyed as a result of indiscriminate construction to provide water and waste disposal facilities and recreational facilities to tourist. Overuse of environmental wealth disturbs ecological balance. To promote safe tourism while ensuring that it remains a profitable industry, it is important to understand the factor that hamper the growth of tourism and check them effectively. General instability of the nation is damaging to tourism prospect. The growing violence in the international scene and increasing threat of terrorism affect the flow of tourist. Countries like Srilanka and Pakistan have been a victim of terrorist threat for a long and have suffered setback in tourism.
