Personal A Collective Dream body in Disease. ... Chart as a tool to determine best surgery time. ... and folklore during the period of westward expansion, the growing-up years of Abraham Lincoln, his presidency, and the Civil War. ... The story of Christopher Columbus, the Italian sailor A navigator whose discovery of America in 1492 changed the geography of the known world. ... Cabot claims Newfoundland for England, A his son Sebastian explores parts of the coast of North America.