Baghdad
* Population: 8 million
* Location: Central Iraq, on the Tigris River
* Significance: Baghdad is the capital of Iraq and the largest city in the country. It is a major economic, political, and cultural center. Baghdad is home to many historical and religious sites, including the Al-Kadhimiya Mosque, the Al-Kazimiyya Shrine, and the National Museum of Iraq.
Basra
* Population: 2.5 million
* Location: Southern Iraq, near the Persian Gulf
* Significance: Basra is the second-largest city in Iraq and the main port city. It is a major center for trade and industry. Basra is also home to several universities and colleges.
Mosul
* Population: 1.5 million
* Location: Northern Iraq, on the Tigris River
* Significance: Mosul is the third-largest city in Iraq and the capital of Nineveh Governorate. It is a major center for commerce and trade. Mosul is also home to several historical and religious sites, including the Grand Mosque of Mosul, the Nabi Yunus Shrine, and the Khosroabad Palace.
These three cities are the most important in Iraq because of their size, location, and economic and political significance.