People have been traveling from one place to another since ancient times. The nomads moved to graze their livestock. Later people traveled to trade or seek their fortune in the gold rush, and millions emigrated to other countries to escape persecution or seek a better life. Aside from a few historical examples, tourism – traveling for pleasure is a relatively modern idea. Today, people spend nearly $1 trillion a year on tourism. Top tourist countries: Since 2005, one in eight people in the world have traveled as a tourist to another country, for a total of 806 million. Of these, almost half visited the top ten destinations below. By 2020 the number of international tourists will likely double to 1.5 billion. S.No Country Visitors % of world total1 France 79,100,000 9.32 Spain 58,500,000 6.93 United States 51,100,000 64 China 49,600,000 5.95 Italy 41,100,000 4.96 United Kingdom 30,700,000 3, 67 Germany 23,600,000 2.88 Mexico 21,400,000 2.59 Austria 20,300,000 2,410 Russia 20,200,000 2.4Top 10 Total 395,600,000 100Taking t...