DENIS DUMO THE Sudanese government and a major rebel group from its southern Nuba Mountains on Sunday signed a document that paves the way for a final peace agreement by guaranteeing freedom of worship to all while separating religion and the state. The signing is viewed as a crucial step in efforts by the power-sharing government headed by General Abdel Fattah al-Burhan to reach accords with rebel groups across the country and end decades of conflicts that left millions displaced and hundreds of thousands dead. Last year Sudan signed a peace agreement with many groups, including from the Western region…