"...The British colonizers planted a political minefield to check the spread of Islam..."

"...the British colonizers planted a political minefield in the 1920s when they drew a line across the bottom third of Sudan and declared that northern and southern Sudanese should remain separate. Part of the reason was to check the spread of Islam. To this day, the upper part of Sudan is mainly Muslim and controlled by Arabs; the lower third is mostly animist and Christian, linguistically and culturally more in tune with Kenya, Uganda and central Africa..."