The discontent of Russian industrial workers was an important cause of the 1905 revolution. Furthermore, it was the most important reason behind the 1905 revolution. However, many other factors also played a important role in the period preceding the revolution. The discontent of the Russian industrial workers pushed Father Gapon to present a petition to the Tsar asking for greater rights and improvements to the system and the march to the Winter Palace with the petition ended up causing Bloody Sunday, another important factor of the revolution . Russification was also a major cause of the 1905 revolution as several minority groups in Russia were treated unfairly and many wanted the situation to change and joined the revolutionary forces. The other causes of the 1905 revolution were the failure of the Russo-Japanese War, the policy of Russification and the bloody.