Asking this again but upping the points, anyone? Please?

The stability that the Roman, Han, and Gupta Empires brought spurred trade in Asia on the Silk Roads. This greatly benefited all three empires and the areas in between. Wealth and ideas passed along the trade network providing the money and ideas necessary for Golden Ages.

answer; eliminate parking problems in cities, because a car took up only half as much space as a horse and buggy;

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.