Respuesta :
The election of Abraham Lincoln is the answer. Fort Sumter, however, was the first battle of the American Civil War. It can't be A, because Sherman's March was in 1864. The Emancipation Proclamation was in 1863, so that can't be the answer. The was had already started.
The election of Abraham Lincoln caused the formation of the confederate states of America. Option d is correct.
Who was Abraham Lincoln?
Abraham Lincoln was a well known and famous American lawyer and statesman that was served as the 16th President of the United States from 1861 to 1865. The formation of the Confederate States of America was precipitated by Abraham Lincoln's election.
Therefore, option d is correct.
Learn more about the Abraham Lincoln, refer to:
https://brainly.com/question/2380000
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