Universal Rules

If your nation isn't mentioned you have a specific rule for your infantry count;

50% of your pop is your troop limits

Every 10 mil pop is 1 destroyer

Every 35 mil pop is 1 battleship

If you don't have these pops yet, you’re not granted a navy

This can override your major limits

200 Consumer limits for all nations

100 arty for all nations apart from majors; majors are granted 150 arty with colonial powers getting granted another 50 arty in their colonial holdings

You cannot ally out of the same ideology, and the majors on this page are the only ones allowed to initiate alliances/factions

You can, however, form alliances if you have the same enemy or forming a defense pact

China is able to form united front against Japan, therefore a faction
No sending troops to civil wars unless your mission tree lets you do so

PvP Rules