Wheeled carts predate spoked wheels, chariots, and wheelbarrows by thousands of years. Those could get pulled by people or animals. https://en.wikipedia.org/wi

Wheeled carts predate spoked wheels, chariots, and wheelbarrows by thousands of years. Those could get pulled by people or animals. https://en.wikipedia.org/wiki/Wheel https://en.wikipedia.org/wiki/Wheel Why do you think ancient farmers cleared fields of rocks to plant or graze? They didn't have machinery that would break. Farms were small. They could just avoid or work around large rocks, and throw the smaller ones to the side to make walls or rock piles. The plow was invented long after agriculture began, and a plow pushed or pulled at human or ox speed wouldn't break on a rock. I agree that moving lots of heavy rocks off of fields would be back-breaking labor, but why would ancient farmers choose such sites to plant? Just because modern farmers clear fields to open up more land to farm doesn't mean ancient farmers had to do that -- they could plant and harvest where the wild grasses already grew. I don't know why the wheelbarrow turns up so late in history. Perhaps they were made entirely of wood, left no artifacts to find, and were common and unremarkable so don't show up in art or monuments. We don't find many spears for the same reason, only the spear tips. Wood gets recycled, burnt, and decays. It's an interesting question but since people invented spoked wheels and chariots quite a long time ago I don't think no one ever thought of making carts or wheelbarrows.