[southernsunshine]

Of course it was. Insurrection: an act or instance of revolting against civil authority or an established government.

At what point were the seceded states in revolt?

[rockrr]

Opinion varies but certainly when they seized federal property.

[r9etb]

At what point were the seceded states in revolt?

Technically, they were in revolt at the time of secession. The question of what to do at that point was not clear, especially given that Lincoln had not been inaugurated at the time, and Buchanan was not willing to act.

The nice gentlement of South Carolina kindly broke the logjam when they fired on Ft. Sumter.