Tsar Alexander III was the Emperor of Russia from 1881 until his death in 1894. He was known for his conservative policies and efforts to strengthen the autocracy, which is a system of government where one person holds absolute power. Alexander III aimed to suppress revolutionary movements and promote national unity, often through repressive measures. During his reign, Alexander III implemented significant reforms in the military and economy, including the expansion of the railway system. He also promoted the idea of Russification, which sought to unify the diverse ethnic groups within the Russian Empire by encouraging the use of the Russian language and culture.