The Transcaucasian Railway is a significant railway network that connects the regions of Georgia, Armenia, and Azerbaijan. It was constructed in the late 19th century to facilitate trade and transportation across the Caucasus region. The railway plays a crucial role in linking the Black Sea to the Caspian Sea, enhancing economic interactions among the countries. This railway system has undergone various upgrades and expansions over the years, improving its efficiency and capacity. It serves both passenger and freight services, making it an essential infrastructure for regional development and connectivity within the South Caucasus.