The document discusses the period after World War 2 known as "Les Trente Glorieuses" or the "Thirty Glorious Years" in France. This era from 1945-1975 saw major transformations in French society and the economy due to advances in science and technology. The state played a key role in reconstruction through nationalizing major companies and industries and receiving aid through the Marshall Plan. This post-war period marked France's transition to a post-industrial society and economy.