"F9" is the keyboard function key used in the free-to-play game C-evo to display in a pop-up window tabulated details of the Nations you are aware of, starting with whichever one is at the top of the current list (usually also the one featured in the first colored column on the F4 technology display and the one that moves first at the end of your turn). Continue pressing F9 to see other extant nations. Or click the top-left menu to see them and the fallen nations and your own table. Near top right is a "trumpet" icon, which you click to initiate a visit by your emissaries.