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).
Conflict ceased in 1972 under the Addis Ababa Agreement which gave southern Sudan considerable autonomy from the north. Civil war broke out again in 1983 when the Sudanese President, Gaafar Nimeiry, violated the Agreement by attempting to create a federated Sudan, including states in the south. Ongoing fighting and a military coup saw an increase of casualties in the south between 1989 and 1994.