what important role did the Indus River play in the development of the Harappan civilization?

Indus valley civilization or the Harappan civilization was established on the bank of Indus river. Indus river provides fertile tract in its bank which was the base of the civilization.

Explanation:

The main river and its tributaries and distributaries in the Indus Valley was a consistent source of resource to this civilization and to other civilization also.  The Indus River Valley Made the soil fertile enough with adequate texture and structure that it promotes healthy growth of crops and enriched production of it.  

It was started during early 2800 B.C. Indus is the longest river of Pakistan, on the bank of it Indus people was lived. The Indus river originates in Himalaya and ended at Arabian sea.

first, the romans stayed isolated because they had to defend their own territories from neighboring cities that were harassing them, like the etruscans. second, once the romans managed to defeat their neighbors, and started to expand their territory, they started to build roads and bridges. finally, now that the romans have covered their territory with roads functioning as highways, they could mobilize their legions faster to assemble larger military units in a specific place

answer; i believe the correct answer is (federalist);