In a chapter of his "Economic Justice and Democracy" (2005) recounting the history of libertarian socialism, economist Robin Hahnel relates that the period where libertarian socialism has had its greatest impact was at the end of the 19th century through the first four decades of the 20th century. According to Hahnel, "libertarian socialism was as powerful a force as social democracy and communism" in the early 20th century. The Anarchist St. Imier International, referred by Hahnel as the Libertarian International, was founded at the 1872 Congress of St. Imier a few days after the split between Marxist and libertarians at The Hague Congress of the First International, referred by Hahnel as the Socialist International. This Libertarian International "competed successfully against social democrats and communists alike for the loyalty of anticapitalist activists, revolutionaries, workers, unions and political parties for over fifty years". For Hahnel, libertarian socialists "played a major role in the Russian revolutions of 1905 and 1917. Libertarian socialists played a dominant role in the Mexican Revolution of 1911. Twenty years after World War I was over, libertarian socialists were still strong enough to spearhead the social revolution that swept across Republican Spain in 1936 and 1937". On the other hand, a libertarian trend also developed within Marxism which gained visibility around the late 1910s mainly in reaction against Bolshevism and Leninism rising to power and establishing the Soviet Union. Libertian socialists argue these states were in the process of transitioning from capitalism to socialism following Leninist doctrine and never reached further stages of development. Libertarian socialists seek the abolition of the state without going through a state capitalist transitionary stage.