Question

Why are the Middle East countries, despite of being rich are not called developed countries?

Answer 1

HEY DEAR....
HERE'S YOUR ANSWER⬇
The countries of the Middle-East may have very high per capita income due to revenues from crude oil, but they are otherwise not developed in each sector (except Israel). Their literacy rate, life expectancy at birth and other similar parameters do not match those of developed countries of the West.
The probable reason is that they have become rich nations recendy due to sharp increase in the price of oil, but their society has not developed accordingly. Most of the wealth is accumulated in a few hand, so, the society has widespread inequality.
Any doubts, please ask me in the comments.
I HOPE YOU FIND IT HELPFUL.
@ LB :)