French is one of the most widely used languages in the world, spoken in five continents. The United States trades with French-speaking countries more than any others, and more tourists visit France than any other country in the world. The French excel in medicine and biosciences, transportation, hydroelectric and nuclear power, as well as in fashion, wine, art, dance, and film. French-speaking countries in Africa encompass an area larger than the United States. In the Americas, French is spoken not only by 7 million Canadians, but also by people in Haiti, Martinique, Guadeloupe, and in pockets of Central and South America. There is also a substantial number of native French speakers within the U.S. in Louisiana.