From the 19th century, the entirety of Sudan was conquered by the Muhammad Ali dynasty, which was then eventually met with a successful revolt led by the self-proclaimed Mahdi Muhammad Ahmad, resulting in the establishment of the Caliphate of Omdurman. This state was eventually toppled in 1898 by the British, who would then govern Sudan together with Egypt. The 20th century saw the growth of Sudanese nationalism and in 1953 Britain granted Sudan self-government. Independence was proclaimed on 1 January 1956. Since independence, Sudan has been ruled by a series of unstable parliamentary governments and military regimes. Under the Jaafar Nimeiry regime, Sudan began Islamist rule. This exacerbated the rift between the Islamic north, the seat of the government and the Animists and Christians in the south. Differences in language, religion, and political power erupted in a civil war between government forces, strongly influenced by the National Islamic Front (NIF), and the southern rebels, whose most influential faction was the Sudan People's Liberation Army (SPLA), eventually concluding in the independence of South Sudan in 2011. Between 1989 and 2019, Sudan experienced a 30-year-long military dictatorship led by Omar al-Bashir accused of widespread human rights abuses including torture, persecution of minorities, allegations of sponsoring global terrorism and notably, ethnic genocide due to its role in the War in the Darfur region that broke out in 2003. Overall, the regime's actions killed between 300,000 and 400,000 people. Protests erupted in late 2018, demanding Bashir's resignation, which resulted in a successful coup d'état on April 11, 2019.