The History of the Decline and Fall of the Roman Empire, by Edward Gibbon

Chapter LXI: Partition Of The Empire By The French And Venetians

Partition Of The Empire By The French And Venetians,—Five Latin Emperors Of The Houses Of Flanders And Courtenay.—Their Wars Against The Bulgarians And Greeks.—Weakness And Poverty Of The Latin Empire.—Recovery Of Constantinople By The Greeks.—General Consequences Of The Crusades.