Well, the average elevation of The United States is about 2,500 feet (760 metres.) Some European countries have a higher elevation, such as Switzerland, but most European countries have a lower average elevation. Even countries which are known for being mountainous such as Austria and Norway have lower average elevations than The United States. And considering that the highest point in Europe is not as high as the tallest peak within The USA, it's safe to say that "generally", The USA is not as flat. But of course that doesn't mean that there aren't vast areas of flat land to be found, it's just that the overall percentage is lower. The US state of Florida covers an area about the size of Austria and The Czech republic combined, yet the average elevation of the state is 6 feet and the high point is barely 300 feet.