Which people were spared/valued by the Mongol invaders? Why?

Teachers of taxation

Explanation:

The Mongol Invaders spared teachers of taxation and led to the great expansion of printing all over East Asia.

The Mongol had a persistent thirst for knowledge and were very quick learners, They also helped and contributed to the rise of an educated class in Korea.

The Mongol spared them because they are an asset and use for the development of the country and they also contribute to human existence through the explosion of ideas in sciences, art, and trade which have reformed our history more than any other superpower

no , per capita income is not a true measure of the development because: -it only tells us about average income not how income is distributed among the people.it only give us an idea of the economic aspect.it is only at the qualitative basis.moreover, income is not only the way of development other factors are also as much as important as income.

buildings

explanation: