5997479 Gauls trying to form an alliance between their tribes to preserve their independence from Roman invasion (engraving) by French School, (19th century); Private Collection; (add.info.: Gauls trying to form an alliance between their tribes to preserve their independence from Roman invasion. Illustration for Vie De Cesar compiled by Henri De Montaut (Petit Journal, 1865). Digitally cleaned image.); by Look and Learn.