'''Christendom''', is the geographical part of the world in which Christianity prevails or which is governed principally under Christian institutions; it can also mean Christianity as an organized religion. "Thomas Aquinas's books were read throughout Christendom."
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'''Christendom''', is the geographical part of the [[world]] in which [[Christianity]] prevails or which is governed principally under Christian institutions; it can also mean Christianity as an organized [[religion]]. "[[Thomas Aquinas]]' books were read throughout Christendom."