Answered

15. What was the three-field system?
O A the legal system of medieval Europe
OB an agricultural innovation that increased food yields
OC the economic ownership of a fief and its resources by a lo
OD the political relationship between lords and vassals

Answer :

Answer:

B

Explanation:

The three field system allowed nutrients to be replenished in the soil when crops were not being grown, making sure that the soil could stay fertile for longer periods of time.

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