The Indus Civilization c5.6

c5.6

The streets of Mohenjo-daro were all aligned from east to west or from north to south, for the reason that the prevailing winds always come from the two latter quarters. A north or south wind, sweeping down a broad thoroughfare, would suck the stagnant air out of the smaller streets and lanes running at right angles which in this way would be amply ventilated. It is uncertain whether the builders of the city realized that this would be the case.