At the time of the 1930 coup, three trade unions existed in Argentina: the Confederación Obrera Argentina (COA, founded in 1926 and linked to the Socialist Party, the Unión Sindical Argentina (USA, anarcho-syndicalist) and the FORA V, dissolved by Uriburu.
Although the Great Depression and the subsequent rural exodus had brought many politically unexperimented workers to Buenos Aires, the spontaneous import substitution industrialization enabled, starting in 1935,[REF] coupled to the strengthening of trade unions, enabled wages' increase [REF].