The Great Enclosure, consisting of massive circular walls made entirely of stones placed together without the use of mortar, is associated with which East African society?

The correct answer is Great Zimbabwe

These buildings were sometimes even over 5 meters long and were made out of bricks that were stacked on top of each other. The constructions are huge and there are many anthropologists who claim that these constructions are second in their greatness only to the great pyramids in Egypt because of how massive and unique they are.