When they discovered horses, what did Native Americans do with the plains landscape?\nOptions:\n- ocean\n- dominated\n- raised on farms\n- play\n- eat grass
Let's think carefully first. Step-by-step reasoning process:
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When horses became widely available in 1600s, native Americans disrupted agriculture norms altogether and intensified hunting competition between Native American groups to become nomadic buffalo hunters. When native Americans discovered horses, they dominated or had a commanding position with plains landscape. So the final answer is dominated.
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