Brown v. Board of education
Hope it helps
Answer:
Delta
Explanation:
Delta is a triangular region where rivers divide into small streams and then progresses to drain into a big river. Such regions possess rich alluvial and mineral soil deposits. It is the part of an old age river.
For example - the largest delta of the world is the Ganges Bhramaputra delta
This shows that they were very clever to make a stone wall. This makes trying to bring down the wall harder most likely make enemy think not to attack them.
