Thanks to cinema and TV, we all have different impressions of the United States of America. Yet none of this can prepare for the unforgettable skyline of Manhattan's first trip in a yellow cab, the ubiquitous hamburger stalls, the vast expanse of the prairies, fresh arrangements of jazz from New Orleans or the excess of Las Vegas neon. U.S. is a huge country with 50 states to choose from, flanked by two oceans and covering an incredibly varied terrain. In the five centuries since ...