The history of transportation is very long and full of changes and inventions. It starts 1 walking, which is not any invention; it just takes energy. People used to walk to get to other places. If you wanted to get somewhere quickly, the 2 way to do that was to run. Actually, the first invention for transportation 3 was the shoe. Centuries ago there were no shoes, and people walked barefoot.
Then people invented 4 to transport themselves and materials from one place to another. In some cultures, people invented sledges (雪橇), 5 are a kind of board that you drag along the ground. You can tie things on the sledge to help carry them, but it"s a challenging invention 6 if you hit a rock with the sledge as you pull it, the contents can 7 . In other cultures, people invented the wheel, which they used to make it easier to move things—and people. That was the beginning of many innovations in transportation.
8 people had wheels they could invent other ways to travel. They could put the wheel on a board and make it a wagon, and then they could 9 that wagon to an ox or a horse and ride as well as carry materials. That wheel led to 10 we have today: trucks, automobiles, and even boats and planes. For example, there were steamboats that used giant wheels that turned with blades, pushing the water and pushing the boat forward.