Review Articles
http://www.history.com/topics/renaissance-art
http://www.reformation21.org/articles/the-importance-of-the-printing.php
http://faculty.history.wisc.edu/sommerville/361/361-19.htm
http://www.biography.com/people/leonardo-da-vinci-40396
http://www.historylearningsite.co.uk/John_Calvin.htm1
https://sites.google.com/a/ucps.k12.nc.us/mrms-7th-grade-social-studies-textbook/the-age-of-exploration/technological-innovations-of-the-age-of-exploration
http://www.reformation21.org/articles/the-importance-of-the-printing.php
http://faculty.history.wisc.edu/sommerville/361/361-19.htm
http://www.biography.com/people/leonardo-da-vinci-40396
http://www.historylearningsite.co.uk/John_Calvin.htm1
https://sites.google.com/a/ucps.k12.nc.us/mrms-7th-grade-social-studies-textbook/the-age-of-exploration/technological-innovations-of-the-age-of-exploration