Classe IIID - La società di massa

• https://upload.wikimedia.org/wikipedia/commons/6/68/Great_Ex_Telescope_Telescope.jpg
• https://upload.wikimedia.org/wikipedia/commons/1/1c/Paris_Exposition_Machinery_Section%2C_Paris%2C_France%2C_1900.jpg
• https://upload.wikimedia.org/wikipedia/commons/4/45/Le_palais_de_l%27%C3%A9lectricit%C3%A9_et_les_fontaines_lumineuses_au_Champ-de-Mars.jpg
• https://upload.wikimedia.org/wikipedia/commons/c/c6/Le_palais_des_illusions%2C_Exposition_Universelle_1900_B.jpg
• https://upload.wikimedia.org/wikipedia/commons/d/da/L%27exposition_vue_du_Trocad%C3%A9ro%2C_1900.jpg
• https://upload.wikimedia.org/wikipedia/commons/7/74/La_Seine_et_l%27Exposition%3B_vue_prise_du_Trocad%C3%A9ro.jpg
• https://upload.wikimedia.org/wikipedia/commons/0/08/Le_globe_c%C3%A9leste%2C_Exposition_universelle_1900.jpg
• la Seconda Rivoluzione Industriale