A friend sent me this brief chronology of the demise of Ottoman authority in Hijaz. He said it wasn't Saud family which helped the demise of the Caliphate, but it was their arch enemy.
Nov 1914 - Caliph Mehmet V declared jihad against Allies (Brits, France & Rusia)
June 1916
- Hussein bin Ali, Ameer of Makkah refused the jihad call unless he was given larger autonomy. The Caliph refused the request.
- Hussein bin Ali started rebellion and conquered Makkah.
- Hussein army also took over Jeddah & several cities with the help from Brits.
Oct 1916
- Brits sent TE Lawrence aka "Lawrence of Arabia" to assist Hussein fought the Ottoman army.
- Hussein army attacked Madina, but was repelled.
Mar 1924 - Hussein bin Ali declared himself as Caliph.
1925 - Al Saud took Makkah from Hussein
Is that chronology correct? If correct, why the long gap between Caliph declaring jihad and Hussein refusing the call? Any history bookworm here?