Vietnam is a long narrow country extending from China. It also shares a border with Laos to the east. It is full of hills, mountains (the tallest being Fansipan, at 3,142 meters). and fertile valleys, where many people live. The two largest rivers are the Mekong River and the Red River. Many people live and find work in the deltas of these rivers. In addition to the mountains and rivers, Vietnam has a lot of plains and flatlands which the people use to support the large agricultural industry in Vietnam.