A serf is an agricultural laborer bound to the land of the nobility they work for (part of feudalism). It has been used throughout many civilizations up until about the 20th century.
Answer:
During the High Middle Ages, which began after 1000, the population of Europe increased greatly as technological and agricultural innovations allowed trade to flourish and the Medieval Warm Period climate change allowed crop yields to increase.
Explanation:
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Great Britain got huge gains in territory, and France gave up most of their land.