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The fall of Western Roman Empire was the process by which the Western Roman Empire lost central political control, the empire failed the enforce of it's rule and it's vast territory was divided. -
Charlemagne is a Frankish king in 8th-century, he united most of Europe under his rule. Also helped to restore the Western Roman Empire and became it's first empire. -
The First Crusade is to retake the city of Jerusalem and the Holy Land from Muslim control, it's a military operation by Western Europe forces. -
Magna Carta drafted at Runnymede and signed by King John under his rebellious barons' pressure, it's a document guaranteeing English political liberties. -
The Great Famine is caused by a disease that can affect potato crop called late blight, it destroys both the leaves and the edible roots or tubers of the potato plant.
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The black death is a pandemic occurring in Afro-Eurasia, killed about 30 percent of people living in Europe and causing the death of 75–200 million people in Eurasia and North Africa.
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The Great Schism is conflict between two bishops in the Roman Catholic Church who both claim to be the true pope.