Jacques Droz was one of the most prestigious historians in Europe. Recognized for his research in Germanic history and political ideas, he published numerous works on contemporary history, among which Le Socialisme démocratique (1945-1963) stands out, translated into Spanish under the title Historia del socialismo, Historie diplomatique de 1648 à 1919, Les révolutions allemandes de 1848, Le romantisme allemand et l'État, Histoire d'Allemagne, Le libéralisme rhénan, 1815-1848 and Contribution à l'histoire du libéralisme.