Due to a ruined economy returning 11/ state back into the union and promoting the right of former slaves
I'd have to say the westward expansion. mainly because cheap land, economic opportunities
<span>For several years the Angkor or Khmer Empire was the most powerful state on the mainland Southeast Asia. (in 800's) I believe that is your answer.</span>
To briefly compare both terms, geography refers to the study of the physical features of the earth as well as its inhabitants or the population; whereas, geology refers to the study of the structure of the earth, its development as well as its origin.