Basically what it says in the title, make the Polish-Lithuanian Commonwealth last as long as possible as a great power or otherwise. Preferably it does not become a formal subject or vassal of any other nation, though PU's are acceptable.
My Timeline: Augustus II decides to intervene against the Hapsburg Monarchy in the WotSS, buying the neutrality of Brandenburg by formally allowing the release of East Prussia and the Elector's declaration of himself as King of Prussia. He takes Silesia in the peace conference for Saxony unifying his realms' territories geographically if not politically and from there with French support builds up a de facto hereditary succession for the von Wettins as King of Poland, Grand Duke of Lithuania, and Duke of Saxony; ultimately his heirs reform the Polish Constitution to give the King more power and guarantee hereditary succession to the throne. The diplomatic revolution under Maria Theresa still happens ITTL, and Poland-Austria-France becomes a dominant coalition on the continent (von Wettin kings support Hapsburg interests in Bavaria to make up for the loss of Silesia). Austrian and to a lesser extent French support as well as a pragmatic tolerance of Prussian commerce and troop movements along a strictly defined corridor between Royal Prussia and Brandenburg result in a foiled Russia and no partitions ITTL. Thus PLC survives much longer than IOTL, though the Napoleonic Wars and the unification of Germany will each pose their own problems for it.
My Timeline: Augustus II decides to intervene against the Hapsburg Monarchy in the WotSS, buying the neutrality of Brandenburg by formally allowing the release of East Prussia and the Elector's declaration of himself as King of Prussia. He takes Silesia in the peace conference for Saxony unifying his realms' territories geographically if not politically and from there with French support builds up a de facto hereditary succession for the von Wettins as King of Poland, Grand Duke of Lithuania, and Duke of Saxony; ultimately his heirs reform the Polish Constitution to give the King more power and guarantee hereditary succession to the throne. The diplomatic revolution under Maria Theresa still happens ITTL, and Poland-Austria-France becomes a dominant coalition on the continent (von Wettin kings support Hapsburg interests in Bavaria to make up for the loss of Silesia). Austrian and to a lesser extent French support as well as a pragmatic tolerance of Prussian commerce and troop movements along a strictly defined corridor between Royal Prussia and Brandenburg result in a foiled Russia and no partitions ITTL. Thus PLC survives much longer than IOTL, though the Napoleonic Wars and the unification of Germany will each pose their own problems for it.
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