Christianity and Islam were the two biggest religions (Judaism was third) in medival Europe. The Christians saw the Jews as sinners because "they killed Jesus" and the Islamics as infidels who worshiped a false god. Islam was actually theonly peaceful religion... until they cast the Christians out of the holy land. This started the Crusades, which boosted both religion's honor, since anyone who died in the crusades went to heaven.
They weren't originated in Europe. They spread there from the middle-east. Trade between regions, as well as wars of conquest, were largely responsible for the dispersal of both people and culture.
Islam and Christianity both trace their roots to Judaism. All three are, in fact, merely different branches of the same monotheistic religion.
Neither Christianity nor Isalm orignated in Europe. Christianity Originated in Judea (modern day Israel) and Islam originated in Mecca (modern day Saudi Arabia)
Aside from pagans, nearly everyone in medieval Europe believed in the same God, who was the God of Judaism, Christianity, and Islam.
Medieval crusades were caused by conflict between Christianity and Islam in Palestine. Christian Europe and Islamic Turcs had interests in the same area.
Both Islam and Christianity originated out of Judaism.
That depends on which part of the world you lived. In Europe the dominant religion was Catholic Christianity, But there was also Hinduism, Buddhism and Islam in other places and the religions of the peoples of the Americas and China and Australia to consider.
All Christianity - medieval, ancient, modern and otherwise - differs from Judaism and Islam in worshiping Jesus of Nazareth as the Son of God, Lord and Savior.
I'd have to say Christianity for certain and with the rise of Islam, then Islam is number two.
Christianity and Islam both originated from Judaism.
Judaism, Christianity, and Islam.
The Crusades were mainly a series of military campaigns between Christian powers in Europe and Muslim forces in the Middle East. The conflict arose due to religious and political tensions between Christianity and Islam during the medieval period.
Christianity, Islam,and Judiasm.
Islam did not originate in India. Christianity did not. Judaism did not. Baha'i did not. Zoroastrianism did not.