The technique known as perspective is most useful in the creation of what art

In an article about americans working in middle eastern countries, cicy, a white journalist, is described as knowing that she should cover her hair when she leaves her house. according to this article, cicy:

What does bts stand for? what is the importance of bts? who first started it?

Where does the wood yiri come from? i know it is somewhere in africa but a specific location, . worth 15 points hurry