Post 1861: Reverse the Ottoman Decline

As it says on the tin. At some point after January 1st, how can the slow decline of the Ottoman Empire be halted and, perhaps, even reversed?
 
Malê Rising and With The Crescent Above Us both have exactly that. In the case of Crescent it's because of victory of the Russo Turkish war thanks to their best general avoiding assassination and Tanzimat being preserved as a policy because modernization hasn't been discredited.
 

Deleted member 14881

Have the Russo Ottoman war of 1876-8 turn into a Ottoman Victory.
 
You could have the Central Powers win an early victory in WW1, (say, Germans win at the Battle of the Marne), meaning that the Ottomans will still exist by the time oil's found in the Middle East which it can capitalise on, and become a great power again.
 
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