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Rome fell because the empire ruled to much Europe and kings/rulers that tried to take the power for themselves. This was important because it was the start of the Dark Ages or the Middle Ages.

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Charlemagne became king because he spread Christianity and conquered many areas of land. This was important because he brought together much of Western Europe.

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The Vikings invaded Europe because they saw Europe as wealthy and were eager to gain some. This was important because it opened up trade routes and traded with many territories.

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Feudalism was a system in which people were given protection from people of higher rank, given land, and fought for them in return. This was important because it gave people specific roles and was an organized society.

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The first crusade was to fight back the Holy Land. It was important because it growed trade and trading cities.

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The second crusade gained wealth from Muslim Empires. The importance of it was that it improved weapons and technology.

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The third crusade was the forgiveness of sins. It was important because it was one of the history's most successful failures but did bring changes to Europe.

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The forth crusade is to be released from their jobs on feudal manors. The importance was to increase in kings power in Europe.

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The Magna Carta is a legal document signed by King John and gave citizens certain rights. It is important because it stated the king also must obey the law and led to the growth of common law.

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The Black Plague was an infectious disease carried by rats that had infected fleas. The importance was that the entire village was wiped out and the economy suffered, etc.

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The Renaissance was a rebirth of education, science, art, literature, music and a better life for people. The importance of it was that it was a cultural movement that was a philosophy that all people should strive to be educated.