why was the last one formed?
April 1989
Introduction
Operation Lifeline Sudan was established in April 1989 in response to a devastating war-induced famine and other humanitarian consequences of the Second Sudanese Civil War between the Sudanese government and South Sudanese rebels. 
where is chad located? North-central Africa. what kind of weather does it have? Tropical which ethnic groups are based there? Sara, Arabs, Toubous is the first group based in any other country as well? Yes - Central African Republic, Sudan what is the status of human rights in the second place? Muslims who convert to Christianity can face the death penalty,  88% of women in Sudan had undergone female genital mutilation, restricting women's rights and allowing child marriage which international organizations are trying to help the people there? World Food Program (WFP), the United Nations Development Programme (UNDP), Operation Lifeline Sudan (OLS)
In response to a devastating war-induced famine and other humanitarian consequences of the Second Sudanese Civil War between the Sudanese government and South Sudanese rebels. As a response to a devastating war-induced famine and other humanitarian consequences of the Second Sudanese Civil War between the Sudanese government and South Sudanese rebels. To provide humanitarian assistance throughout war-torn and drought-afflicted regions in the South.
Operation Lifeline Sudan Operation Lifeline Sudan Operation Lifeline Sudan
Introduction Introduction Introduction
Operation Lifeline Sudan (OLS) was a consortium of United Nations agencies (mainly UNICEF and the World Food Programme) and approximately 35 non-governmental organizations operating in southern Sudan to provide humanitarian assistance throughout war-torn and drought-afflicted regions in the South. Operation Lifeline Sudan was established in April 1989 in response to a devastating war-induced famine and other humanitarian consequences of the Second Sudanese Civil War between the Sudanese government and South Sudanese rebels.  Operation Lifeline Sudan was established in April 1989 in response to a devastating war-induced famine and other humanitarian consequences of the Second Sudanese Civil War between the Sudanese government and South Sudanese rebels. Operation Lifeline Sudan (OLS) was a consortium of United Nations agencies (mainly UNICEF and the World Food Programme) and approximately 35 non-governmental organizations operating in southern Sudan to provide humanitarian assistance throughout war-torn and drought-afflicted regions in the South.
wiki:20997545
Operation Lifeline Sudan [SEP] Introduction
Operation Lifeline Sudan (OLS) was a consortium of United Nations agencies (mainly UNICEF and the World Food Programme) and approximately 35 non-governmental organizations operating in southern Sudan to provide humanitarian assistance throughout war-torn and drought-afflicted regions in the South. Operation Lifeline Sudan was established in April 1989 in response to a devastating war-induced famine and other humanitarian consequences of the Second Sudanese Civil War between the Sudanese government and South Sudanese rebels. It was the result of negotiations between the UN, the Government of Sudan and the Sudan People's Liberation Movement/Army (SPLM/A) to deliver humanitarian assistance to all civilians in need, regardless of their location or political affiliation.