Since the invention of the wheel carts have been an essential part of agriculture. From large industrial agricultural operations to the small family farm, carts help in a variety of ways. Grain farmers use them to transport seeds as well as certain types of fertilizers. Livestock farmers use them almost daily to transport a variety of feed products such as hay or corn to feed their cattle, chickens, sheep etc. Perhaps the most popular use of carts and most visible by non-farmers are the horse carts. Horse farmers use horse carts to transport their livestock for various purposes, whether it is to sell or to take them to the field to race. Carts are versatile and can be used for many different functions.