The territorial evolution of the Ottoman Empire from the Middle Ages to the First World War. At its peak in the 16th century under the reign of Sulaiman I the Magnificent, it extended for 1,800,000 km², in Africa, Asia and Europe, and was known as "The Empire of the Seven Climates. '' | Islamic History

Territorial evolution of Germany - Vivid Maps

Soviet Union - Countries, Cold War & Collapse | HISTORY

A look at the legacy of Mikhail Gorbachev, final leader of the Soviet Union