The Silk Road was an ancient road that stretched through Asia and the Middle East, where fine goods were traded from one person to another. It opened during the Han dynasty (130 bce), but was closed in 1453 ce, when the Ottoman empire boycotted trade with the west and shut down the routes.
The most historically significant triangular trade was the transatlantic slave trade which operated between Europe, Africa and the Americas from the 16th to 19th centuries. Slave ships would leave European ports (such as Bristol and Nantes) and sail to African ports loaded with goods manufactured in Europe.