The Main is Germany's longest river, flowing 525 km to the Rhine. Originates from two main streams: 50 km Red Main and 41 km White Main. Flows through Bavaria, Hesse, and forms Baden-Württemberg border. Forms European Watershed opposite Danube
Fourth-longest river in Africa, flowing into Indian Ocean from Africa. Drains 1,390,000 km² basin, slightly less than half of Nile's. Originates in Zambia at 1,524 m above sea level. Flows through five African countries to Mozambique
Portugal is located at western end of Iberian Peninsula, bordering Spain. Total area is 92,090 square kilometres, including 620 square kilometres of water. Borders Spain for 1,215 kilometres on northern and eastern frontiers. Includes strategic Azores and Madeira archipelagos in Atlantic Ocean
The Zambezi River flows 2,200 miles from Central African Plateau to Indian Ocean. Forms fourth largest river basin in Africa, draining 500,000 square miles. Crosses borders of six African countries: Angola, Zambia, Namibia, Botswana, Zimbabwe, Mozambique
Rivers are large watercourses flowing into oceans or lakes. Creeks are smaller tributaries joining rivers. Streams are smaller, often seasonal water bodies