Which of these was not a part of the american frontier in the last half of the 1800s

d and a is the correct anwsers

explanation:

i think the fact that abraham lincoln was a tyrant

or probably like what the other person said from sitting in the chair to get assasinated xd

~batmans wife dun dun

we need the answer choices to answer the question

a reason that was key to coolidge's victory in the 1924 presidental election was that; democratic party supporters were split in the north and south.