ocr: Extensive river systems like the Mississippl-Missoun provided early transportation networks for the USA. l'oday, it has the world's cheapest, most extensive internal air network and a goodsystem ofinterstate highways. The rail network is poorly developed,by European standards, and carries mostly freight. Since Henry Ford began mass production in Detroit nearly 90 years ago, Americans have been weddedto the car. In 1919,Fordsold one million cars. Today, there are over 255 million cars in the USA. Many cities, such as Los Angeles, have come to depend on the car; the USA now accounts for more tha ...
