WI: 1820s Greek Revolution ends in Ottoman collapse

Imagine a Greek Revolution so successful that they end up helping most of the European nations within the Ottoman Empire secede, and then seize Constantinople. The Sultan resigns and dissolves the empire.

1. Is this plausible?
2. Which countries would give aid to these revolutions (Britain helped Greece, but would they support the complete collapse of the Ottomans?)
3. Would European powers/Persia seize territory in the Middle East?
 
Imagine a Greek Revolution so successful that they end up helping most of the European nations within the Ottoman Empire secede, and then seize Constantinople. The Sultan resigns and dissolves the empire.

1. Is this plausible?
2. Which countries would give aid to these revolutions (Britain helped Greece, but would they support the complete collapse of the Ottomans?)
3. Would European powers/Persia seize territory in the Middle East?

1. What you describe is implausible. Entirely implausible. Even Bulgarians have a better chance taking Constantinople than the Greeks.

2. Britain only helped to contain Russian Influence as War seemed imminent in 1827 with Nicholas really going for it. Russia would and did give assistance to Greeks. A third possibility could be France but they need to get rid of the Bourbons. The Serbs of Montenegro and Belgrade are a likely option as well.

3. Russia yes, Austria possibly also yes. Persia... they are in a war or just about to fight a new war with Russia. Mehmed Ali of Egypt has a better chance of dominating the Middle East. Serbia and Montenegro exist as well to take some land in such case.
 
1. What you describe is implausible. Entirely implausible. Even Bulgarians have a better chance taking Constantinople than the Greeks.

To elaborate on this, since my next timeline update will be covering this stuff: the early 1820's revolts in most of Ottoman Europe were successfully crushed, pretty much everywhere besides the Peloponnese. And once the Egyptians stepped in, even southern Greece was hanging by a thread until the Great Powers stepped in. It took a French army to finish the job...and that was just securing the lands south of Thessaly, which was all Greece had after the war. They couldn't even hold Morea without the French, so pushing all the way to Constantinople is downright outlandish without the Turks having a Crisis of the Third Century-level meltdown.
 
To elaborate on this, since my next timeline update will be covering this stuff: the early 1820's revolts in most of Ottoman Europe were successfully crushed, pretty much everywhere besides the Peloponnese. And once the Egyptians stepped in, even southern Greece was hanging by a thread until the Great Powers stepped in. It took a French army to finish the job...and that was just securing the lands south of Thessaly, which was all Greece had after the war. They couldn't even hold Morea without the French, so pushing all the way to Constantinople is downright outlandish without the Turks having a Crisis of the Third Century-level meltdown.

There is a period in the early 19th century where the Ottomans were close to collapse. Around 1808 when Mahmud II just became Sultan. The Janissaries had revolted to put Mustafa IV back on the throne but Mustafa IV got killed and after the failed fight in Istanbul the Corps gave in. However, they were even considering to remove Mahmud II from the throne even though he was the only male member of the house of Osman. If that succeeded all the land between Bihac to Basra, Suhumkale to Luxor would be broken apart.

In theory, the Greeks could have gotten a lot of more land than OTL if Mahmud II was deposed/killed after the execution of Mustafa IV. But it might as well be under Ali Pasha.
 
One important thing to note is that the Ottomans brought in the Egyptians to sort it out for them, which strongly implies that the Ottomans themselves were no longer able to.

So, the obvious answer to this is to have the Egyptians not bargain with the Ottomans, but press on their own agenda against them. In OTL it was pretty much the same thing - they were trying to take X, the Ottomans said look you can have X, and Y and Z if you come fight for us. It was hardly a done deal, and I imagine there was a lot of debate in Cairo (such as these things ever went) about whether to take the deal or not
 
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