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.)
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The Crusades brought much riches to Western Europe and created a sense of religious unity.
The Magyars attempted to destroy ethnic identity, unity and peace.
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.
Unity and stability.
World War caused Europe to divide. By Omar Adam
The growth of trade in europe caused towns to grow by markets
By creating organizations such as the European Union.
decline in religious unity and in the power of the Catholic Church
it was their language between the american coutries that caused disruption in unity between countries