The Black Sea touches two continents: Europe and Asia. It serves as a natural boundary between them.
The sea connects to the Mediterranean via the Bosporus Strait, Sea of Marmara, and Dardanelles Strait. The Caucasus Mountains rise along its eastern shore, while the Pontic Mountains line the south.
Historically, the Black Sea has been a crossroads of civilizations—Greek colonies, Byzantine Empire, Ottoman Empire, and Russian expansion all centered on its shores. Today it remains strategically vital for trade, energy transport, and naval access.