Which of the following distinguishes the Harappan from other contemporary civilizations of the world?

Which of the following distinguishes the Harappan from other contemporary civilizations of the world?

مندرجہ ذیل میں سے کون ہڑپہ کو دنیا کی دیگر معاصر تہذیبوں سے ممتاز کرتا ہے؟
Explanation

The Harappan civilization was located in the Indus River valley. Its two large cities, Harappa and Mohenjo-daro, were located in present-day Pakistan's Punjab and Sindh provinces, respectively.