The territories was island
I don’t have an answer but I see that the other guy who answered answered on 2 of my questions. He said the Same thing on both of mine which happens to be the same as yours.
Harappa and Mohenjo Daro were expertly planned cities built with a grid pattern of wide, straight streets. Thick walls surrounded the cities. Many people lived in sturdy brick houses that had as many as three floors. Some houses had bathrooms and toilets that connected to the world's first sewer system.
