the impact of the printing press

1)the printing press was made over 500 yrs ago,it was described as one of the fewer major significant events in mankind.

2)the concept of the printing press was first conceived and developed in china and Korea.

3)In the 1500s the printing press and Columbus letter was mostly in Rome.

4)the first printing press was first in Germany in 1460, The first edition of Columbus letter was in LIsbon in March 1493