How old was columbus when he made his voyage?

In 1637, colonists killed between 500 and 600 american indians in connecticut

The naturalization act affected the political process by

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.