City that became center of art world after world war 2

Indian architects worked with construction techniques? a. concrete b. skeleton c. stone and wood d. post-and-lintel only answer if you are 100% positive your answer is correct! 10 points!

Most flexible painting medium, used to create both thin, polished layers and thick, gestural brushstrokes

This painting is by james whistler, and is entitled, symphony in blue and pink. what is the subject matter of this piece?