It shares borders with seven countries: Egypt to the north, Libya to the northwest, Chad to the west, the Central African Republic to the southwest, South Sudan to the south, Ethiopia to the southeast...It shares borders with seven countries: Egypt to the north, Libya to the northwest, Chad to the west, the Central African Republic to the southwest, South Sudan to the south, Ethiopia to the southeast, and Eritrea to the east. The flag of Sudan is a tricolor with three horizontal stripes: red on the top, white in the middle, and black on the bottom, with a green triangle based at the hoist side.