Complex sentence: It tells the story of the French frigate "Meduse", which ran aground off the west coast of Africa in 1816, an ignominious episode in French political and maritime history, immortalized by the painting of the same name by Théodore Géricault.
Split into simpler sentences: It tells the story of the French frigate "Meduse", which ran aground off the west coast of Africa in 1816. It marks an ignominious episode in French political and maritime history, and was later immortalised in the painting of the same name by Théodore Géricault.