Final answer:
Khartoum is the city where the Blue and White Nile Rivers come together. It is the capital of Sudan and a significant historical and contemporary location in the region.
Step-by-step explanation:
The city where the Blue and White Nile Rivers come together is Khartoum, the capital of Sudan. The White Nile flows from Lake Victoria, while the Blue Nile has its origins in Lake Tana. These two major tributaries merge in Khartoum, forming the Nile River, which then continues its journey northward into Egypt and eventually empties into the Mediterranean Sea. Khartoum, being at the confluence of these two rivers, has played a significant role historically and continues to be centrally important in the region.