Iranian identity is shaped by a rich tapestry of history, culture, and language. It is primarily defined by the Persian heritage, which includes the Persian language, literature, and art. The influence of ancient civilizations, such as the Achaemenid Empire, and the contributions of various ethnic groups, including Kurds, Azeris, and Arabs, also play a significant role in forming a diverse national identity. Religion is another key aspect of Iranian identity, with the majority of Iranians identifying as Shia Muslims. This religious affiliation has influenced social norms, customs, and political structures throughout history. Additionally, the country's unique traditions, such as Nowruz (the Persian New Year), reflect the blend of cultural practices that contribute to a distinct Iranian identity.