some Asian countries are in the process of rapid economic growth but some are lagging far behind in the development give any four major to promote their economy and reduce the economic disparity​

the answer would be in this answer. someone already asked the question.  

i feel as if they would both catch on before to long because they would see them to frequent

is there multiple choice or do you need like an essay answer?

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.