I want to know the answer to the following question:
What material was used to make Somali cities?
All the background I'm provided with is that "It involves multiple different construction types, such as stone cities, castles, citadels, fortresses, mosques, mausoleums, towers, tombs, tumuli, cairns, megaliths, menhirs, stelae, dolmens, stone circles, monuments, temples, enclosures, cisterns, aqueducts, and lighthouses.". Is that enough to answer the question?