Transportation history traces the development of methods and systems used to move people and goods. It began with simple means like walking and using animals, such as horses and camels. The invention of the wheel around 3500 BCE marked a significant advancement, leading to the creation of vehicles like carts and chariots. Over time, innovations like the steam engine and railroads in the 19th century transformed travel and trade. In the 20th century, the rise of automobiles and airplanes revolutionized transportation further. The introduction of mass transit systems, such as buses and subways, made urban travel more efficient. Today, advancements in technology continue to shape transportation, with electric vehicles and high-speed trains becoming increasingly popular.