What new economic practice of the 1920s was credited with being responsible for people buying more?
a. cash and carry
b. credit cards
c. installment plan
d. rotating credit

Why are slanted roofs found on many buildings within russia and finland? a. to prevent ice slides. b. to prevent the build-up of water during heavy rains. c. to prevent heat from escaping during the clod winter months. d. to prevent snow build-up.