(: why are western europe's rivers essential to its economy? a. the rivers are scenic and attract many tourists. b. western europe's rivers create political boundaries. c. the rivers provide routes for shipping, exporting, and importing goods. d. fishing is the main industry in western europe.

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.

what words? are you talking about to complet what sentence