How does one get a united German nation (that is including Austria) with a POD not earlier than 1750?
Some typical PoDs:
* A liberal-nationalist Emperor of Austria cooperates with the 1848 Revolution.
* A liberal-nationalist King of Prussia cooperates with the 1848 Revolution, Russia is somehow prevented from helping the Habsburg, Austria loses in Italy and Hungary as a result, and the Habsburg Empire collapses (TL
here).
* Bismarck partitions the Habsburg Empire with Italy and Russia in 1866 (TL
here).
* The Ausgliech fails or collapses.
* Germany makes the Triple Alliance with Russia and Italy, Austria allies with France, Britain, and the Ottomans, and the CPs win WWI (TL
here).
* The CPs win WWI, but the war effort causes irreversible collapse of the Habsburg Empire, Germany steps in and picks the pieces (TL
here).
* Weimar somehow transforms into a stable democracy, or it undergoes a regime change to an expansionist-nationalist but sane far right regime, and neither pick a world war with all the other major great powers when they implement irredentist recovery of Austria, the Sudetenland, and the Corridor (TL
here).
* Hitler is ousted from power between November 1938 and August 1939 by assassination or coup, and a moderate leadership takes over, as above (TL
here).
* Hitler is ousted from power during the Phony War, and the successor bargains a compromise peace with the Western powers over Poland.
* The anti-Nazi coup attempts in March 1943 or July 1944 succeed and the post-Nazi government bargains the Allies into a compromise peace or conditional surrender with German national unity in the post-Munich borders (TL
here and
here).
* The Soviets never set up Austria as a neutral buffer state and it remains divided throughout the Cold War, so respective halves are unified with the German counterparts, and the fall of the Berlin Wall sees the reunfiication of Greater Germany.