Answer:
Art, in my opinion, is just as vital as other subjects. This may seem obvious, but art allow kids to express themselves more freely than other subjects such as arithmetic. It aids in the development of motor skills, visual learning, decision-making, and other abilities.
Beef fat is what I would assume but you still slay
Intaglio printmaking can be dated back to the "Sumerian" people, around the year of 3000 BCE. The name itself however is relatively new, coming from the Latin "intagliare" which means "to cut"