Final answer:
Czechoslovakia is the country that leased the Moldauhafen port in Hamburg, Germany, by the Treaty of Versailles until 2028.
Step-by-step explanation:
The country that leased the Moldauhafen port in Hamburg, Germany, by the Treaty of Versailles until 2028 is Czechoslovakia. The Treaty of Versailles, signed in 1919 after World War I, established the creation of Poland and its water access to the Baltic Sea. The treaty also established the Polish Corridor, which divided parts of Germany and allowed Poland access to the sea. It carved out a path through German territory and gave Poland control over the port of Danzig (now Gdansk) on the Baltic Sea. However, the Moldauhafen port in Hamburg was leased to Czechoslovakia.