1 In contrast, Preseedâs osmolality matches that of semen and thus does not harm or damage sperm.  Viscosity â The texture of many vaginal lubricants also negatively affect fertility by inhibiting the sperm from traveling up the vagina and through the cervix quickly and efficiently.
The Civil War in Sudan was caused by religious tensions between the North and the South. The two main religions are Sunni Muslim (North) and Christians or other traditional beliefs (south).
1978 - Oil discovered in Unity State in southern Sudan. 1983 - Fighting breaks out again between north and south Sudan, under leadership of John Garang's Sudanese People's Liberation Movement (SPLM), after Sudanese President Jaafar Numeiri abolishes South Sudan's autonomy.