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Slavs moved west and south, coming into contact with migrating Celtic and Germanic groups.

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Slav groups in present-day Czech Republic made the Great Moravia. It covered most of central Europe.

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Magyars/Hungarians moved to the Carpathian Basin.

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Slav groups untied to form the Kingdom of Poland.

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Hungary became a Christian Kingdom, and Stephen I became the first king.

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Most of Eastern Europe came to be ruled by different empires. The first one was the Ottoman Empire.

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The Ottoman and Russian Empires competed for control of the rest of Eastern Europe. They fought wars on and off until the late 1800s. Russia successfully extended south into the Ottoman territory near the Black Sea.

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The Ottoman Empire began to shrink. As they weakened, Austria and Russia competed for Eastern Europe's control.

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Russia, Prussia, and Austria divided Poland amongst themselves.

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World War I started. It started due to the European Expansionism. Several European nations had empires across the globe where they got control over vast amounts of land. It ended on November 11, 1918.