Name the place where Blue and White Nile Rivers effect a confluence.
C. Khartoum
Khartoum State is one of the eighteen states of Sudan. The city is located in the heart of Sudan at the confluence of the White Nile and the Blue Nile, where the two rivers unite to form the River Nile. The confluence of the two rivers creates a unique effect. As they join, each river retains its own color which is the White Nile with its bright whiteness and the Blue Nile with its alluvial brown color. These colors are more visible in the flood season.