Christians are sometimes mocked for having once believed the earth was flat. However, the only references I can find are Lactantius in the beginning of the 4th century, and Copernicus, who says ...
The ancient Seleucia was founded along the Tigris river around the year 305 BC, and abandoned in 165 AD, due to the river mutating its course (Wikipedia). However in 780 AD the Catholicos ...
Did Arab Christians take an active role in the crusades in the Holy Land or at any point on their trip to the Holy Land. Or were they victims of the crusaders? Did the crusaders typically ...