How were tribal and religious differences kept in check in Iraq for decades following World War l? What eventually caused these differences to resurface?

Tribal and religious differences were kept in check autocratic dictators and kings from the region.

Explanation:

While the World War One was still underway and the Ottoman Empire was on the brink of collapse, British negotiator Mark Sykes and France's François Georges-Picot set the borders for modern-day Syria, Iraq, Jordan, Lebanon, and most of the territory for which Israel and the Palestinians continue to fight.

Sykes-Picot results in conflicts in the Middle East because it overlooked the complex backgrounds and aspirations of the various ethnic and religious groups of the region, including Arabs, Muslims, Turks, Jews, and Christians.

However, the differences ere resurface because of the foreign power like America interfered in the region. Ignorant of their ethnic differences it's involvement proved fatal for the region.