International Investments You can open the Investment window by left clicking a foreign state puppets and Allies work aswell. Changing the Tax Rate will be your main source of Income but be careful not to increase it too much as that will lower your Ruling Party popularity. Modern Day 4 and Millenium Dawn have decided to merge their mods into one, the new mod mostly uses the MD4 Map and Units while retaining some MD focus tree among other things. While writing this guide, we pick up many pieces of information from several sites for you. HoI4: Millennium Dawn (Random Ideology Nation Selection)