Charlemagne helped cause the unity in Europe by trying to have everyone unite through the religion Christianity. (There are some more factors in what united Europe, but that was all I could find.)
cats
The Crusades brought much riches to Western Europe and created a sense of religious unity.
k
Eastern Europe does not seek anything from Western Europe other than political unity and aid.
The Magyars attempted to destroy ethnic identity, unity and peace.
The Magyars attempted to destroy ethnic identity, unity and peace.
World War caused Europe to divide. By Omar Adam
Unity and stability.
The growth of trade in europe caused towns to grow by markets
decline in religious unity and in the power of the Catholic Church
By creating organizations such as the European Union.
It caused Europe's population to drop around 50 % so that is between 541 and 700.