He feared retaliation from border states, which supported slavery
Competition and promises are the main 2
True. the dust bowl and the storms were a devastation to people in the 30s they had to fight to stay alive before the storm then it just got worse when it hut them
The answer is "wanting to disguise the truth they have uncovered."
Some historians find this tough. One of the reasons would be because not all people may or may not, like the truth. Some historians would omit some part of the truth to keep violent reactions from the readers or outsiders.
