Not only am I familiar with the 50 states in the United States, but also my wife and I have visited more than 145 countries in the world, and the Carter Center has had full-time programs in 80 nations on Earth.
Non seulement je connais bien les 50 États des États-Unis, mais ma femme et moi  avons visités plus de 145 pays et le Carter Center a des  programmes permanents dans 80 pays.