Complex sentence: The Eurasia Canal ("Kanal " Evraziya"") is a proposed 700 km (430 mi) long canal connecting the Caspian Sea to the lower Black Sea along the Kuma-Manych Depression, which is often considered the border between Europe and Asia.
Split into simpler sentences: The Eurasia Canal is a proposed 700 km (430 mi) long canal connecting the Caspian Sea to the Black Sea. The proposed route of the canal would follow the Kuma-Manych Depression, which is often considered the border between Europe and Asia.