Final answer:
The primary ethnic factional groups in Iraq are Arabs, Kurds, Turkmen, and Assyrians, with Arabs being the majority and divided into Sunni and Shia sects.
Step-by-step explanation:
The primary ethnic factional groups in Iraq are predominantly the Arabs, Kurds, Turkmen, and Assyrians. These groups represent the major ethno-linguistic and cultural divisions within the country. The Arabs are the largest group and are mainly divided into Sunni and Shia, with the Shias forming the majority.
The Kurds are the second-largest group, found primarily in the autonomous region of Kurdistan in the north. Turkmen and Assyrians are smaller ethnic minorities with their own distinct cultures and languages.