United Kingdom and Brazil
They are both, I believe, considered megapolis's
Answer:
Sahel. The Sahel is a narrow band of semi-arid land that forms a transition zone between the Sahara to the north and the savannas to the south. It is made up of flat, barren plains that stretch roughly 5,400 kilometers (3,300 miles) across Africa, from Senegal to Sudan.
Make me brainliest!!!!!!
Explanation: