The Tsar's New Clothes

In 1883, the Tsar of Russia, Alexander II, a liberal-minded reformist who ought to further liberalizing the Russian Empire, was assassinated by the revolutionary political organization Narodnaya Volya. His conservative and autocratic successors, Alexander III and Nicolas II has reversed much of Alexander II's reforms, which resulted in the Russian Empire's demise in 1917. But what if Alexander II has survived his assassination attempt and managed to reform the Russian Empire into a constitutional monarchy? How would a surviving Russian Empire affect the 20th century, the two World Wars and the Cold War?

1855

 * Alexander II was crowned as the Tsar of Russia.

1861

 * The emancipation of the serfs reform was carried out by the Tsar, officialy abolishing serfdom in the Russian Empire.
 * The Kingdom of Italy was proclaimed, with Victor Emmanuel II becoming the King of Italy.

1866

 * The Austro-Prussian War happened, which resulted in a decisive Prussian victory.

1870

 * The Franco-Prussian War broke out between the Sedond French Empire and the Kingdom of Prussia.