Children of the frontier had lots of these to do like milking cows and feeding the chickens its a 6 letter word , and it starts with a (c) and ends with an (s)

answer; the edward snowden leaks of nsa classified material;

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.