The Crusades united Christians in a common cause against a foreign enemy.
Perhaps you should argue that it was a unifying force.
the battle of tours united European Christians against Islamic expansion.
The battle of tours United European christians to act as an a fine for us in the medieval evil Europe
It allowed the safety of missionaries who taught that a personal relationship with God was more important. Pagan traditions were incorporated with Christianity. This allows Christianity to spread all over Europe.
Christianity.
Christianity, specifically Catholicism, was spread all over Europe by the Roman empire, and continued after its collapse. The Catholic church centered in Rome became very important institution.
the catholic church
Cordell Eat turds
Medieval Monks spread Christianity by many different techniques. Now, if you are talking about Medieval Monks in Europe, then they spread Christianity by telling others mostly. There is a website all about Medieval Monks below.
Both events were examples of Christianity's unifying effects in Europe.
Christianity could be considered to be the heir to the Roman empire because after the fall of the west, it was the single unifying force. Christianity did not stop wars nor did it erase ethnic prejudices, but it was the one common thread running through Europe, just as the Roman empire was the common binder of Europe.
Oversimplified, the major unifying force of Europe during the middle ages was universal Christianity (both Roman Catholic and Orthodox) providing an us-vs-them mentality in oppostion to their Islamic foes in the Ottoman Empire, the caliphates (abbasid, fatimid, etc.), the Emirate of Cordoba, and Al-Andulas.
Both acted as a unifying force in europe
Catholicism, the Roman Catholic version of Christianity, was the principal religion in medieval England
Neither Christianity nor Isalm orignated in Europe. Christianity Originated in Judea (modern day Israel) and Islam originated in Mecca (modern day Saudi Arabia)