a. Why did the Gallipoli campaign of 1915 fail?
The Gallipoli campaign was waged between February 1915 to January 1916. The Entente allies aimed to take control of the Turkish Straits, break the Ottoman blockade of Russian ports and expose the capital Istanbul to bombardment by allied battleships. If the Ottomans were defeated the Suez canal would be safe for allied shipping and oil supplies and the supply route though to Russia's warm water ports in the Black sea...