Edited sentence: As a universal religion, Islam is nominally opposed to any categorisation of people not based on one's beliefs.Islam promotes a strong feeling of community among all Muslims, who collectively constitute the Ummah.Shared observances such as the holy month of Ramadan and the Hajj (the pilgrimage to Mecca), contribute to this common Muslim identification.The Nation of Islam in the United States has been criticised by some Muslims, who find the comparison between Islam and an earthly nation offensive.The confusion may arise because in other cases it does translate to the English word "nation", as in the Arabic name of the United Nations,الأمم المتحدة, Al Umam al Mutahidah.The word "Ummah" is often incorrectly translated into English as "Islamic nation" but it is not a nation in this sense and not a synonym of 'caliphate', although the idea is associated with the historic caliphates