Seaports are the backbone of global trade - Around 90 percent of the world's traded goods are transported by sea. This click-on-map geography quiz tests your knowledge of where the world's major ports are located. From the Port of Shanghai - The world's busiest container port - To Rotterdam in the Netherlands (Europe's largest port), from Singapore's massive transshipment hub to the Port of Los Angeles, the world's great ports are windows into the geography of global commerce. Can you locate Port Said at the entrance to the Suez Canal, or find the deep-water port of Durban in South Africa? Test your knowledge of maritime geography here.