Complex sentence: The treaty opened the Dardanelles to all commercial vessels, thus liberating commerce for cereals, live stocks and wood, although it took the Treaty of Hünkâr İskelesi (1833) to settle the Straits Question between the signatories.
Split into simpler sentences: The treaty opened the Dardanelles to all commercial vessels, thus liberating commerce for cereals, live stocks and wood. However, it took the Treaty of Hünkâr İskelesi (1833) to finally settle the Straits Question between the signatories.