Modern Greece traces its roots to the civilisation of ancient Greece, generally considered the cradle of Western civilization. As such, it is the birthplace of democracy, Western philosophy, the Olympic Games, Western literature and historiography, political science, major scientific and mathematical principles, and Western drama, including both tragedy and comedy. This legacy is partly reflected in the 17 UNESCO World Heritage Sites located in Greece. The modern Greek state was established in 1830, following a victorious uprising against Ottoman rule.