I am pretty sure it was the Mayans. here go to this website to have a visual image of what their writing looked like:
https://www.google.com/search?q=mayans+writing&biw=1366&bih=659&source=lnms&tbm=isch&sa=X&sqi=2&ved=...
Answer:
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.
Explanation:
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The answer is. alms!!!!!!!!!!!!