Later on they covered the bottoms of the rafts with animal skins to try to keep the water out. Around five thousand years ago, the Egyptians made the first sailboats. The sails catch the wind and use wind power to make the boat go. If there wasn't enough wind, the Egyptians had to paddle. The horses traveled a lot farther after the invention of horseshoes.
Horseshoes are metal shoes nailed to the bottom of a horse's foot.
The Chinese had roads with speed limits three thousands years ago. Officials stood on the roads to decide who went first at crossings. In Rome, writers complained about traffic jams thousands of years ago. But horses, carts and sailboats didn't let people travel nearly as quickly as we can today. People lived close to their jobs, because they could only get to work by walking or riding a horse.