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).
While the most common cause of the Civil war is said to be slavery, there were several other factors involved also. Although slavery was the major cause, so to speak, it was definitely not the only cause of the Civil War. As the former led to the latter, abolition of slavery and Civil War have become comparable terms.