10. Reasons why mercator was important One reasons why he was important was because he invented the eastern hemisphere map. Used longitude and latitude lines for sailors. Mercator also figured out that since the earth is a sphere to get it on a flat sheet of paper.
11. Impact on us today Mercator impacted our lives today because he invented how to make the earth onto a map in s circular formation. And he was also the first one to use longitude and latitude lines for maps for sailors.
