How did the fourth crusade contribute to the byzantine empire's downfall

Actually it is the people of the Fourth Crusade who captured and partitioned the empire.

Explanation:

The Crusaders reconquered parts of Anatolia, captured Jerusalem, and returned the land they conquered in Anatolia to the Byzantine Empire. Which in turn led the fall of the Byzantine Empire.

It caused the death of the most able and respected Byzantine emperor, Leo III.

It left Constantinople permanently damaged after the crusaders looted all the valuables.

It led to large-scale conflicts which broke out between military forces and Byzantine civilians.

It unleashed a terrible plague on Constantinople, drastically reducing its population and causing mass death

religion played a major role in the american revolution by offering a moral sanction for opposition to the british--an assurance to the average american that revolution was justified in the sight of god. the revolution strengthened millennialist strains in american.

general allotment act (dawes act) february 8, 1887

amendment to the dawes act, february 28, 1891

commission to the five civilized tribes (dawes commission), march 3, 1893