Answer:
The Indus River Valley.
Step-by-step 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. Its extent reached as far south as the Gulf of Khambhat and as far east as the Yamuna (Jumna) River.