Answer: 1.- They had their own issues and didn't want to get involved in a major conflict. and 2.- They were warned by the Union government that any European intervention or assistance to the Confederacy would be greeted as an act of war.
Explanation: From the perspective of Britain and France, there was good reason to help the Confederacy and intervene in the Civil War. Southern plantations produced large quantities of cotton, which was a staple used in textile production and industry in Britain and France. Disrupting this influx of cotton would damage European textiles, therefore making it important for European countries to keep strong links with the Confederacy. However, the two main reasons explained before, deter European nations to intervene.