Who overthrew the Sumerians? the Canaanites
armies from Crete
the Egyptians
the Amorites and Elamites

The Amorites and Elamites  is the correct answer

Explanation:

The Canaanites is not a correct answer, as they inhabited the region of todays Israel, and they appeared much later.

Armies from Crete is not correct answer as beside trade connections we don't know anything about wars between these areas.

The Egyptians is not correct as Egypt came to this areas much later, during the New Kingdom.

The Amorites and Elamites is the correct answer, as they conquered Sumerian cities, and created their own Empire. Amorites created Old Babylonian Empire.

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it the big letter b heart my answer