Why does the office of the president has a press and communications staff? a. the president uses mass media to speak to congress. b. the president uses mass media to gain support for policies. c. the president uses mass media to issue executive orders. d. the president uses mass media to speak to other countries.

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.

answer; the federal reserve system;