Sudan comes under joint British-Egyptian rule, lasting until 1955.
Sudan gains independence.
Civil war breaks out in the south between government forces and the Sudan People's Liberation Movement (SPLM).
Sudan begins to export oil.
The United States extends unilateral sanctions against Sudan, citing its record on human rights violations and terrorism.
In October, an autonomous government is officially formed in South Sudan.
The Presidents of Sudan and Chad sign an accord that aims to end five years of hostilities between the two countries.
South Sudan gains its independence from Sudan.
The presidents of Sudan and South Sudan agree to trade, oil, and security deals.