The Russian Revolution of 1905, also known as the First Russian Revolution, occurred on 22 January 1905, and was a wave of mass political and social unrest that spread through vast areas of the Russian Empire. The mass unrest was directed against the Tsar, nobility, and ruling class. It included worker strikes, peasant unrest, and military mutinies. In response to the public pressure, Tsar Nicholas II enacted some constitutional reform (namely the October Manifesto). This took the form of establishing the State Duma, the multi-party system, and the Russian Constitution of 1906. Despite popular participation in the Duma, the parliament was unable to issue laws of its own, and frequently came into conflict with Nicholas. Its power was limited and Nicholas continued to hold the ruling authori