What is the present-day name of the river(s) around which your chosen civilizations were based?

Depending on the civilization you have chosen, there are several possibilities. But traditionally, the ancient civilizations that emerged closer to rivers are:

Explanation:

the correct answer is the following is a list of inventions made in the medieval islamic world, especially during the "islamic golden age" (8th to 13th centuries),[1][2] as well as the late medieval period, especially in the emirate of granada and the ottoman empire.

science and technology in the islamic world adopted and preserved knowledge and technologies from contemporary and earlier civilizations, including persia, india, china, and greece-roman antiquity, while making a number of improvements and innovations.