French colonization of Algeria: The passage of the Iron Gate in Algeria on 28/10/1839??The French expedition; commissioned by the Duke of Orleans in 1839 crosses the passage of the Bibans (Iron Gates (Algeria): An 1839 French expedition under the Duke of Orleans disregarded the clauses of the 1837 Treaty of Tafna with emir Abd el-Kader by passing through them; Reigniting the war between them) Engraving from ?????Histoire de la vie politique et de Louis-Philippe?????by Alexandre Dumas; 1852