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).
Causes of the Civil War: The Collapse of the Two-Party System. The tensions between North and South were mirrored in a growing schism in the nation's political parties. Following the compromise of 1850 and the crisis in Kansas, the nation's two major parties, the Whigs and Democrats, began to fracture along regional lines.