Republicanism is a political ideology centered around the concept of a republic, where the authority of the government is derived from the people's consent and representatives are elected to serve the public good. This ideology emphasizes civic participation, individual rights, and the importance of a constitution or legal framework to safeguard democracy and limit governmental power. In the context of nation-building in Turkey, Iran, and Arab states, republicanism played a significant role in shaping political structures and guiding movements towards independence and self-determination.