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.
Demand refers to how much (quantity) of a product or service is desired by buyers
Supply represents how much the market can offer
This one is really hard but i think oligarchy
Many workers went to the industrial towns from the country's farmlands, but much more emigrated from other European and Asian countries. The scale of the factories or mills, as well as the types of work that laborers did, varied greatly in industrial work.