Hausa-Fulani, Yoruba and Igbo are the three largest ethnic groups in Nigeria and have maintained historical preeminence in Nigerian politics; competition amongst these three groups has fueled animosity. Following the bloody civil war, nationalism has seen an increase in the southern part of the country leading to active secessionist movements such as the Oodua Peoples Congress and the Movement for the Actualization of the Sovereign State of Biafra, though these groups are generally small and not representative of the entire ethnic group.