I think it's war but I'm not really 100% sure on it
The answer you are looking for is: A. Government leaders to revise the Articles of Confederation.
The Confederacy? The interest seems to be the act of slavery and the war Lincoln is talking about must be the Civil War, which was taking place while Lincoln was addressing his second inaugural. Lincoln was reasoning that the Confederacy was fighting to keep slavery, which is the interest the "insurgents" have. Lincoln also did not want slavery to continue to spread, but he was fine with having slavery, "restrict the territorial enlargement if [slavery]".
The different branches of the government help limit the power of the federal government because there are checks and balances with each branch and if one branch doesn't quite agree with the executive branch then the two other branches can overrule the president's power.
144 ounces.
Here is the formula: 1 pound = 16 ounces
Just do the multiplication.