Question

why asia is not developed continent

Answer 1

Thanks for asking the question.
Asia in a developing country. This means that some of the countries of Asia are still developing. Title of developed countries is given to those countries which are fully developed. A developed country is a sovereign state that has a highly developed economy and advanced infrastructure relative to other less industrialized nations.
Hope it helps. 

Answer 2

It's not a developed continent because it has many countries which are developing

Eg. India China Pakistan Nepal Bhutan etc

So it is estimated that in 3000

All Asian countries would be developed

And as we know most of European countries are developed because that have high living standards , High technology

So it's very simple that Asia is a developing continent