Religion

Religion is a vital component of Knights of Honor. Every kingdom belongs to a single religion, which comes with advantages and disadvantages. Religion ties you to your neighbors and the head of your church (if applicable) and provides various other in-game actions to take part in, such as crusades and jihads.
== Knights of Honor II: Sovereign ==
Kingdoms belong to one religion at a time, all of which come with various kingdom effects. These can be found in-game by clicking on the Piety symbol (upper right) and are also listed here.
Religious Effects
Catholic 	+5 commerce in kingdom
+20% merchant trade income
+5% cheaper buildings and upgrades cost
Catholic (Excommunicated)	+5 commerce in kingdom
+20% merchant trade income
+5% cheaper buildings and upgrades cost
-3 army morale
Orthodox (Subordinated) 	+10% books in kingdom
-2 army morale
Orthodox (Independent) 	+10% books in kingdom
+10% income
-1 army morale
+250 fame from autocephaly
Orthodox (Ecumenical) 	+20% books in kingdom
+10% income
+500 fame from ecumenical patriarch
+100 influence in subordinated kingdoms
+50 influence in independent kingdoms
Sunni 	+10% piety income
+5 stability
Sunni (caliphate) 	+100 influence in all neighbors
+100 fame from caliphate
+50 caliphate influence in all Muslim kingdoms
+20 of Piety converted to books
+15% income
+20% piety income
+15 stability
Shia 	+5% income
+20% piety income
Shia (caliphate) 	+100 influence in all neighbors
+100 fame from caliphate
+50 caliphate influence in all Muslim kingdoms
+20 of piety converted to books
+20% income
+30% piety income
+15 stability
Pagan 	-10% income
-25% books in kingdom