The Thames has been a vital means of transportation and trade for centuries, and its importance can be traced back to Roman times. The original city of London was founded by the Romans in the first century AD on the north bank of the river. The Thames provided a convenient and safe mode of transport for goods and people, and the city grew into a major trading hub. In the Middle Ages, London continued to prosper and the river became increasingly important for trade and commerce and eventually became one of the most important ports in the world. The Thames also played a crucial role in the development of the British Empire. It provided a gateway for ships carrying goods and people to and from the colonies. In the 18th and 19th centuries, the river was widened and deepened to accommodate larger ships. The Thames also powered the growth of industry along its banks, including shipbuilding, sugar refining, and brewing. London Docks were opened in 1802 and became one of the largest and busiest ports in the world. Today, the Thames remains an important artery for trade and transportation.