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: Secession Begins. In response to Lincoln's victory, South Carolina opened a convention to discuss seceding from the Union. On December 24, 1860, it adopted a declaration of secession and left the Union.