2 free points of the day

Explain why a work of art is considered so valuable and who is affected when a work of art is stolen

& hurry! i need this done by 3: 00 pm! changes in artists' art brought about by the inventions of automobiles and trains shows that society influences what? brainliest whoever gets it correct!

In a paragraph of no less than 125 words, explain the single most important factor involved in advancing american classical music in the twentieth century.