Christianity in the 15th century - Wikipedia
http://en.wikipedia.org/wiki/Christianity_in_the_15th_century
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History of Christianity during the Middle Ages - Wikipedia
http://en.wikipedia.org/wiki/History_of_Christianity_during_the_Middle_Ages
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Protestant Reformation - Wikipedia
http://en.wikipedia.org/wiki/Protestant_Reformation
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History of Christianity - Wikipedia
http://en.wikipedia.org/wiki/History_of_Christianity
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history of Roman Catholicism | Britannica.com
http://www.britannica.com/topic/history-of-Roman-Catholicism
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Roman Catholicism - The age of Reformation and Counter-Reformation
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http://www.britannica.com/topic/Roman-Catholicism/The-age-of-Reformation-and-Counter-Reformation

HISTORY of the CHRISTIAN CHURCH*
HISTORY of MODERN CHRISTIANITY THE REFORMATION. FROM A.D. 1517 TO 1648.
http://www.ccel.org/s/schaff/history/7_ch01.htm
HISTORY of the CHRISTIAN CHURCH * История Христианской ЦЕРКВИ *
HISTORY ИСТОРИЯ of из MODERN CHRISTIANITY СОВРЕМЕННАЯ ХРИСТИАНСТВО THE REFORMATION. Реформации. FROM AD 1517 TO 1648. С 1517 г. н.э. до 1648 года.
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