Which key flaw most likely encouraged the replacement of the articles of confederation?

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.

President reagan supported economics tax proposals. a. keynesian b. federal c. supply-side d. demand-side

The ottoman turks advanced rapidity into the balkans,until only austria lay between them and western european. true or false