I believe the answer would be Abraham Lincoln.
The correct answer of the given question above would be option A. The arrest of Sacco and Vanzetti on murder charges produced the effect of <span>violence by anarchist groups. This violence of the anarchist group also resulted in big riots which was called "The Heymarket Riots". Hope this answer helps. </span>
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.
Andrew Mellow and Herbert Hoover are your answer
Herbert Hoover later became one of our presidents, i believe
hope this helps
