Migration out of a country often severely affects that nation's economy. iran is one example of this. explain how migration out of iran has contributed to the country's brain drain, and describe the effect this has had on the economy.

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.