The United States has offered Sudan a wide ranging package of incentives including restoration of full diplomatic relations if it improves conditions in the Darfur region and does not undermine the referendum on the secession of the South of the country due next January. The Obama Administration's special envoy to Sudan, who is visiting Sudan and Kenya on Thursday, told reporters in Washington, incentives could also include trade and investment and debt relief though further sanctions were possible if no progress was made. Semi-autonomous south Sudan is struggling to recover from Africa's longest civil conflict, which left an estimated two million people dead and was fueled by ethnicity, ideology, religion and resources such as oil.The United Nations says 300,000 people have died in the western Darfur region since minority rebels revolted against the central government in 2003, and 2.7 million people have fled their homes from the fighting.