Arab nationalism is a political and cultural movement that seeks to unify Arab people across the Middle East and North Africa. It emphasizes a shared heritage, language, and history among Arab nations, promoting the idea that Arabs should work together for their common interests and identity. This movement gained momentum in the early 20th century, especially after the decline of the Ottoman Empire and during the struggle against colonialism. The movement has inspired various leaders and groups, such as Gamal Abdel Nasser in Egypt and the Ba'ath Party in Syria and Iraq. While it has fostered a sense of unity, Arab nationalism has also faced challenges, including regional conflicts and differing political ideologies among Arab countries.