Second Lausanne Congress of the First International in 1867

Congress of the International Workingmen's Association (IWA), held September 1867 in Lausanne, Switzerland, attended by 71 delegates, not attended by Marx and Engels.

Although the Proudhonists, who accounted for the majority of the Congress, forced the Congress to discuss questions such as the co-operatives, women’s labor, education, and adopted several resolutions on credits, people’s banks and trade unions, co-operative production with their majority; however, the Congress adopted the Resolution on the Political Struggle of the Working Class and upholding the principle of taking political struggle as the fundamental path of the emancipation of the working class. This marked a major victory of Marxism against Proudhonism on the question of the fundamental path of the emancipation of the working class.