4 POD

I have idea about timeline.
1 Russia keep Alaska as result of southern state wining war of independence. Or other reason.
Result Russia find gold in Alaska and build good pacific fleet.
2. Austria than Russia maybe Italy join Franco-Prussian war of 1871. Austria on side of France. Russia and maybe Italy on side of Prussia. Austria lose the war. Kingdom of Hungry whit Zagreb become Russia puppet. Czechoslovakia and Galicia become part of Russian Empire. Part of polish Austria become part of Czechoslovakia. Czechoslovakia have same autonomy as Poland.
3 in war of 1877 Russia annex Bulgaria Serbia Bosnia and Istanbul. Greece and Montenegro become Russian poppet. Most of European turkey split between Bulgaria and Greece. Armenia and Georgia get some Turkish territory. If Italy was Russia ally in previous war they help in war of 1877. Italy get some islands south of Greece and Albania. Albania could be puppet state of Italy. Russia Italy relation is very warm. Bavaria join Austria but it almost not related to Russia Turkish war.
4 Russia beat Japan in war of 1905. In battle of Tsushima Japanese navy is destroyed. Russian Navy take huge loses. Over twice of Japan. But win due to numbers. Russia annex Manchuria Mongolia Hokkaido East Turkestan.

Towards Great War Russia is strongest power in Europe and Asia. Only rivals are France and Britain because of a lot of colonies.
 
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