Climate changes affect what plants grow in a certain area . therefore it defines what animals will be there.climates also affect water levels in the ocean
A lot of historians believe the battle of Fort Sumter was the start of the war, as it was the first official battle. However, there were zero casualties.
A lot of other people believe when Lincoln was elected was the start, because that event led many southern states to secede very quickly.
Answer: the failure to acknowledge american indians as equal