Jan van Eyck ( 1395 - 1441 , Netherlands ) introduced a power of oil painting. He was one of the most influential painters. He showed that oil made paintings look realistic and inspired many Renaissance artists at the time. With oil painting art pieces looked more real than before. His famous works are: Crucifixion and Last Judgement, Ghent Altarpiece, Arnolfini portrait.
Answer: A ) developing new, realistic techniques.
W= f d,
450 = 150 d
450/150 = 3
It is moved 3 metres up.
True, it was a type of military strategy used in WW2 where they would quickly bomb a town/city and take over using bombs dropped from air power.