Final answer:
Lieutenant Arthur Fermantle's exact views are not provided, but discussions around the Civil War often involve debates over its contributors, with slavery at the forefront. The Emancipation Proclamation aimed to weaken the Confederacy and change the war's nature, contributing to the view of the war's association with slavery.
Step-by-step explanation:
From the context provided, it does not appear that a Lieutenant Arthur Fermantle is mentioned in the historical accounts related to the Civil War. It is possible there might be confusion with Lieutenant Colonel Arthur James Lyon Fremantle of the British Army, who was an observer of the American Civil War and wrote about his experiences.
However, without specific references to his beliefs about the causes of the Civil War or how his views were received, it is difficult to provide a detailed response regarding Arthur Fermantle's perspective.
Regarding the questions posed, various motivations underlie the argument that the Civil War was fought over issues other than slavery. Some people may point to states' rights, economic differences, and regional autonomy as contributing factors.
The Emancipation Proclamation by Abraham Lincoln set a tone for the war being about ending slavery, but its immediate effect was limited since it applied only to states in rebellion.