The Tech Tree Spans from 1900 till the present allowing for either a continuous 100 year long game, or a short 5-10 year long war depending on your play style. Each Start Date will have the following: 4 Politicians (One Per Ideology Group), Order of Battle (As Accurate as Possible), 7 Focus Trees at the very minumum (One Per Major Country). We will be releasing one start date per update. It will allow you to play through the last century of world history. Rise of Nations is a mod lovingly made by the Hoi4 Community, for the Hoi4 Community.