Answer:
They resulted in higher casualty rates than in the past is the correct answer.
Explanation:
Turner's main point in his thesis was that the frontier played the most significant part in American History and that majority of history took place around the colonization of the West.
His arguments are considered innacurate because what mostly dominates American History are the Civil War, industrialization, slavery and immigration. He also ignores the existance of native americans who lived out of the settled area.
Yes, it is true that the domestication of plants (and animals) led to more stationary settlements during the First Agricultural Revolution, since this led to a surplus of food--meaning that people no longer had to "hunt and gather" for their food.
