Misc: what was the first European book printed?

Questions

Christopher Columbus became the first explorer to land in the Americas in 1492. In 1497, who was second?

John Cabot became the first person to explore Canada in 1497. In 1534, who was second?

A pioneer in the use of snowmobiles for Arctic exploration, this explorer led the first confirmed overland expedition to the North Pole in 1968, after a 43-day journey?

This country has the highest prison population rate, at 700 prisoners per 100,000?

This country has the 2nd highest prison population rate, at 665 per thousand?