land est ine ▁diplom atic ▁actions ▁are ▁also ▁available . ▁For ▁example , ▁the ▁player ▁may ▁justify ▁war ▁against ▁other ▁nations , ▁spread ▁their ▁ide ology ▁abroad , ▁or ▁stage ▁a ▁coup . ▁Count ries ▁in ▁the ▁game ▁may ▁be ▁dem ocr atic , ▁fasc ist , ▁commun ist , ▁or ▁non - aligned . ▁Each ▁of ▁the ▁four ▁ide ologies ▁has ▁advantages ▁and ▁dis adv antages ; ▁for ▁example , ▁fasc ist ▁nations ▁can ▁go ▁to ▁war ▁with ▁other ▁countries ▁easily , ▁but ▁other ▁nations ▁are ▁not ▁as ▁willing ▁to ▁trade ▁with ▁them ▁as ▁they ▁are ▁with ▁dem ocr atic ▁countries . ▁If ▁a ▁different ▁ide ology ▁becomes ▁too ▁popular ▁in ▁a ▁country , ▁a ▁refer endum ▁may ▁be ▁held ▁that ▁will ▁peace fully ▁convert ▁the ▁nation ▁to ▁the ▁most ▁popular ▁ide ology . ▁Otherwise , ▁ide ologies ▁may ▁come ▁to ▁power ▁viol ently ▁through ▁cou ps , ▁civil ▁wars , ▁or ▁forced ▁sub j ug ation ▁by ▁a ▁foreign ▁power . ▁ ▁While ▁He arts ▁of ▁Iron ▁IV ▁does ▁feature ▁some ▁script ed ▁events , ▁the ▁game ▁features ▁a ▁" n ational ▁focus " ▁system ▁that ▁makes ▁fixed ▁events ▁less ▁necessary ▁than ▁in ▁previous ▁install ments ▁in ▁the ▁series . ▁Each ▁country ▁in ▁the ▁game ▁has ▁a ▁" focus ▁tree " ▁with ▁various ▁" n ational ▁focus es " ▁that ▁grant ▁certain ▁effects ▁or ▁trigger ▁events . ▁For ▁example , ▁for ▁the ▁An schluss ▁to ▁occur , ▁Germany ▁must ▁first ▁complete ▁the ▁focus ▁that ▁is ▁related ▁to ▁it . ▁Other ▁focus