Home On Wheels

• ca. 4500 BCE: invention of the potter's wheel, beginning of the Chalcolithic (Ubaid period)
• 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