Most of the GNP of the US came from the south - agriculture. The south felt like it was being ignored by the US Government and most of its attention was focused on the North.
Most of the exports did. That's not the same as GNP.
The south felt like it was being ignored by the US Government and most of its attention was focused on the North.
Nonsense. Prior to the rebellion, most of the presidents and vice-presidents had been southerners, congressional leaders had been southerners, Supreme Court justices had been southerners, and so forth and so on. The South was not and never had suffered from lack of attention.