
socialism - reduces civil unrest and increases nationwide production
police state - reduces enemy propaganda effectiveness. defensive spies are twice as effective
ultracentralization - may occasionally subjugate small ideologically-aligned or culturally similar nations that border you without npc incident
patriotic war - when fighting in friendly territory (yours or allies'), gain a 100% troop defense bonus
bureaucracy - increases wealth from trade. whenever you discover a technology, gain a small wealth boost
unified academia - research agreements with other communist nations are twice as potent. every time you declare peace, gain a free technology
modern vassalage - may grant portions of your empire minimal autonomy to increase production, wealth, and reduce civil unrest. when declared upon, receive a 50% bonus to troop capacity
five-year plan - may designate five-years to focus on either research, production, or ideology. during a research focus, receive an extra technology at the end of the five years. during a production focus, receive 50% extra troop capacity. during an ideology focus, exude increased ideological pressure against trade partners and neighbors
cultural revolution - enemy propaganda is less effective. communist propaganda against neighbors is twice as effective. when you are in danger of a civil war due to ideological pressure, automatically "remove" problem citizens and return to normality