One Wheel Transport Evolution

• 4500–3300 BCE: Chalcolithic, earliest wheeled vehicles, domestication of the horse
• 3300–2200 BCE: Early Bronze Age
• 2200–1550 BCE: Middle Bronze Age, invention of the spoked wheel and the chariot
Wide usage of the wheel was probably delayed because smooth roads were needed for wheels to be effective. Carrying goods on the back would have been the preferred method of transportation over surfaces that contained many obstacles. The lack of developed roads prevented wide adoption of the wheel for transportation until well into the 20th century in less developed areas.