It would seem that the U.K. might've been better informed, as the Union and Confederacy both vied for their support in the conflict. But were other nations comparably interested or knowledgeable?
The U.S. was not yet a world power at that point, so might they have just largely ignored it? But if not, how was it represented in the press at the time, or by their historians, politicians, etc.?
Thanks for your consideration!
The position of France was similar to the UK in that they both secretly favored slightly the South. They never intervened though and never really chose a side.
Mainly they thought it was a purely American matter and did not want to get involved with it.
Napoléon III from France notoriously said about the conflict "If the North wins I will be happy, if the South wins I will be delighted.". The reason why UK and France slightly favored the South was mainly commercial : the economy of the South relied a lot on foreign trade and was therefore very much in favor of open trade while the North imposed heavy taxes at the border on imported products.
But mainly they just ignored it as "not their business". The official stance of France was very clear on that.
The United States and France : civil war diplomacy by Lynn Marshall and Warren Spencer.