Iraqi nationalism is a form of nationalism which asserts the belief that Iraqis are a nation and promotes the cultural unity of Iraqis, of ethnoreligious groups such as Arabs, Kurds, Turkmens, Assyrians, Chaldeans, Yazidis, Mandeans, Shabaks, Kawliya, Dom, Yarsans, and others. Iraqi nationalism involves the recognition of an Iraqi identity stemming from ancient Mesopotamia including its civilizations of Sumer, Akkad, Babylonia and Assyria. Iraqi nationalism influenced Iraq's movement for independence from Ottoman and British occupation. Iraqi nationalism was an important factor in the 1920 Revolution against British occupation, and the 1958 Revolution against the British-installed Hashemite monarchy.