Basically, people who are educated leave the country going towards places like Europe or the Americas. This leaves the country without educated people and the country can't develop which ruins its economy in turn because there's nobody to improve things and help build the country and its economy. These people go to other countries and help there.
Migration out of Iran has contributed to the country's brain drain because many good workers have left Iran to Europe and U.S for better jobs and conditions. The effect of this to the economy is there will be more poverty and worse living standards. This is negative effect on their economy.
Explanation:
Just took it and looked back and got it correct. Good luck and hopes it help. Plus the longer is usually bad cause the system knows that usually children don't type that long.