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).
After gaining independence from Egypt and the United Kingdom in 1956, Sudan suffered a civil war, lasting 17 years, subsequently followed by ethnic, religious and economic conflicts between the Northern Sudanese (with Arab and Nubian roots), and the Christian and animist Nilotes of Southern Sudan.