Which geographic feature marks the easternmost edge of islam under the umayyads? a. black sea b. indus river valley c. nile river d. sahara desert

b. indus river valley

Explanation:

The Umayyads constitute the Muslim conquests incorporating the Sindh,  Maghreb, and Iberian peninsular into the Muslim world. Covering an area of  11,100,000 km square with 33 million people. Making it the largest empires in history the Christian that still live here are jews, the early influences were of Islam in the 7th century they had a prosperous trade between Syria and Yemen in the south. Had developed economic and military alliances with the nomadic Arabian tribes.