The Dnieper is one of the major rivers of Europe, rising in Russia and flowing through Belarus and Ukraine before emptying into the Black Sea. It is the fourth-longest river in Europe. For centuries, the Dnieper has been a vital trade route, notably forming part of the 'Route from the Varangians to the Greeks' in the Middle Ages, which connected Scandinavia with the Byzantine Empire. Today, the river is essential to Ukraine's infrastructure, providing hydroelectric power through a series of massive dams and reservoirs, and supplying water for the country's vast agricultural sector. The river divides Ukraine into 'Left-bank' and 'Right-bank' regions, a distinction that has historic and cultural significance. However, the river faces environmental challenges, including pollution from industrial cities along its banks and the long-term ecological impact of the Chernobyl disaster, as the river flows through the exclusion zone.