The GPRF introduced a program of social reforms and laid the foundations of the French welfare state. It also enacted some nationalizations in strategic or/and Collaborationist-controlled economic sectors (including the 1946 founding of Électricité de France electricity company, the 1945 nationalization of the AGF insurance firm, the nationalization of the Crédit Lyonnais bank in 1945 and the Société Générale bank in 1946, as well as the nationalization of the car maker Renault, which had been accused of Collaborationism). Trade union independence was guaranteed by the 1946 Charter of Amiens. This program comprised a substantial part of the so-called "acquis sociaux" (social rights) established in France during the second half of the twentieth century.