Feudal systems were common in the early Middle Ages. In a feudal system, lords gave land to their
vassals in exchange for
A crops.
B. livestock.
C. medical care.
D. military service.

I want to say option A: Crops is your answer.

Explanation:

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- "the most famous structure by far at saqqara is djoser's step pyramid. dating from the 3rd dynasty (2667—2448 bc), it was the first all-stone complex ever built on earth."

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some women in the middle and upper classes worked as doctors, government officials, or priestesses. both women and men enjoyed a better quality of life the higher they were on the social pyramid. the egyptians believed that their class system created a stable, well-ordered society. each group had its own role to play.