Final answer:
Tzar Alexander II of Russia abolished serfdom and emancipated peasants, encouraged nationalist movements, and did not order the dismantling of the railway system.
Step-by-step explanation:
Tzar Alexander II of Russia was known for abolishing serfdom and emancipating about 22 million peasants, providing them with citizenship rights and the opportunity to purchase their own land. This reform improved the lives of many peasants and marked a significant shift in Russia's social structure. While he did not order the dismantling of Russia's railway system, Alexander II did encourage nationalist movements among Poles, Ukrainians, and Baltic peoples in the western lands of the Russian Empire, supporting the formation of new independent states. Lastly, Alexander II was not directly involved in the final battle of the Crimean War, which ended in 1856.
Learn more about Tzar Alexander II of Russia's reforms