Based on the map given, it can be deduced that the landform is the Great Rift Valley.
A landform simply means a natural physical feature of the surface of the Earth that's defined by its forms and location.
From the map, the Great Rift Valley is illustrated. It is a series of contiguous geographic trenches, that is approximately 7,000 kilometres in total length.
Learn more about landforms on:
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After searching I discovered your question is multiple choice. The answer choices are as follows:
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A.By using the state constitutions as models, the delegates to the Constitutional Convention avoided almost all disagreements.
B.Most of the U.S. Constitution was directly copied from state constitutions.
C. State constitutions did not guarantee rights, so the authors of the U.S. Constitution included a bill of rights.
D. The people who wrote the state constitutions had learned valuable lessons about writing a constitution.
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The correct choice is A.
It is the third one, dugout canoes. Hope this helped
