I believe that the answer is C, "By binding lower classes to specific tasks and roles."
Out of that list, the one that describes the events at Appomattox Courthouse in April of 1865 is A. Lee surrendered to Grant, who gave him generous terms of surrender. Robert E Lee was the commander of Confederate forces in Virginia and thus, as the loser, he was the one who had to surrender to Grant, the commander of Union forces. However, the terms were very generous as President Lincoln sought an immediate period of reconciliation rather than harboring ill-will in a military state. As such, the Confederate troops present at Appomattox were allowed to leave without repercussion.<span />
English people wanted to find gold and other resources.
The battle of Santiago would be correct.