Firstly, the Caspian Sea is a remnant of the former Tethys Ocean. Secondly, the Caspian Sea is still an endorheic basin, meaning that there is no outlet, allowing the salt to accumulate.
Aral Sea
Azerbaijan is not a body of water. It's a country on the border of the Caspian Sea. Azerbaijan is in Europe and Aisa.
Garabogazköl Aylagy is a lake to the east of the Caspian Sea.
The Volga River flows through central Russia, starting in the Valdai Hills and ending at the Caspian Sea. It is the longest river in Europe and an important transportation route and water source for many cities along its banks.
The Volga River flows into the Caspian Sea, which is the world's largest inland body of water.
One cubic foot of sea water contains about 7.5 gallons.
The world's largest lake is the Caspian Sea which is completely enclosed by Russia, Iran, Kazakhstan, Turkmenistan and Azerbaijan. There's no such thing as a "fresh salt water lake"
Garabogazköl Aylagy is a lake to the east of the Caspian Sea.
Caspian Sea
Aral Sea and Caspian Sea.
Approximately 2.93659203e+20 Imperial gallons.
About 328 gallons. But one will know the exact answer.