Index: ps/trunk/binaries/data/mods/public/simulation/ai/common-api/gamestate.js
===================================================================
--- ps/trunk/binaries/data/mods/public/simulation/ai/common-api/gamestate.js
+++ ps/trunk/binaries/data/mods/public/simulation/ai/common-api/gamestate.js
@@ -25,7 +25,7 @@
 	this.ceasefireTimeRemaining = SharedScript.ceasefireTimeRemaining;
 
 	// get the list of possible phases for this civ:
-	// we assume all of them are researchable from the civil centre
+	// we assume all of them are researchable from the civil center
 	this.phases = [];
 	let cctemplate = this.getTemplate(this.applyCiv("structures/{civ}_civil_centre"));
 	if (!cctemplate)
Index: ps/trunk/binaries/data/mods/public/simulation/ai/petra/defenseManager.js
===================================================================
--- ps/trunk/binaries/data/mods/public/simulation/ai/petra/defenseManager.js
+++ ps/trunk/binaries/data/mods/public/simulation/ai/petra/defenseManager.js
@@ -498,7 +498,7 @@
 		}
 	}
 
-	// If shortage of defenders, produce infantry garrisoned in nearest civil centre
+	// If shortage of defenders, produce infantry garrisoned in nearest civil center
 	let armiesPos = [];
 	for (let a = 0; a < armiesNeeding.length; ++a)
 		armiesPos.push(armiesNeeding[a].army.foePosition);
Index: ps/trunk/binaries/data/mods/public/simulation/ai/petra/headquarters.js
===================================================================
--- ps/trunk/binaries/data/mods/public/simulation/ai/petra/headquarters.js
+++ ps/trunk/binaries/data/mods/public/simulation/ai/petra/headquarters.js
@@ -932,7 +932,7 @@
 };
 
 /**
- * Returns the best position to build a new Civil Centre
+ * Returns the best position to build a new Civil Center
  * Whose primary function would be to reach new resources of type "resource".
  */
 m.HQ.prototype.findEconomicCCLocation = function(gameState, template, resource, proximity, fromStrategic)
@@ -1132,7 +1132,7 @@
 };
 
 /**
- * Returns the best position to build a new Civil Centre
+ * Returns the best position to build a new Civil Center
  * Whose primary function would be to assure territorial continuity with our allies
  */
 m.HQ.prototype.findStrategicCCLocation = function(gameState, template)
@@ -2060,7 +2060,7 @@
 };
 
 /**
- * train with highest priority ranged infantry in the nearest civil centre from a given set of positions
+ * train with highest priority ranged infantry in the nearest civil center from a given set of positions
  * and garrison them there for defense
  */
 m.HQ.prototype.trainEmergencyUnits = function(gameState, positions)
Index: ps/trunk/binaries/data/mods/public/simulation/data/auras/units/catafalques/mace_catafalque.json
===================================================================
--- ps/trunk/binaries/data/mods/public/simulation/data/auras/units/catafalques/mace_catafalque.json
+++ ps/trunk/binaries/data/mods/public/simulation/data/auras/units/catafalques/mace_catafalque.json
@@ -7,5 +7,5 @@
 
 	],
 	"auraName": "Sacker of Cities",
-	"auraDescription": "During the First Macedonian War, Philip and his troops sacked Thermum, the religious and political centre of Aetolia.\n+5 food and wood for every enemy unit killed or structure destroyed."
+	"auraDescription": "During the First Macedonian War, Philip and his troops sacked Thermum, the religious and political center of Aetolia.\n+5 food and wood for every enemy unit killed or structure destroyed."
 }
Index: ps/trunk/binaries/data/mods/public/simulation/data/civs/kush.json
===================================================================
--- ps/trunk/binaries/data/mods/public/simulation/data/civs/kush.json
+++ ps/trunk/binaries/data/mods/public/simulation/data/civs/kush.json
@@ -20,7 +20,7 @@
 			[
 				{
 					"Name": "Monumental Architecture",
-					"Description": "+50% HP and -50% build time for Civic Centres, Temples, Pyramids and Wonders."
+					"Description": "+50% HP and -50% build time for Civic Centers, Temples, Pyramids and Wonders."
 				},
 				{
 					"Name": "High Priest of Amun",
Index: ps/trunk/binaries/data/mods/public/simulation/data/technologies/kushites/monumental_architecture.json
===================================================================
--- ps/trunk/binaries/data/mods/public/simulation/data/technologies/kushites/monumental_architecture.json
+++ ps/trunk/binaries/data/mods/public/simulation/data/technologies/kushites/monumental_architecture.json
@@ -5,7 +5,7 @@
 	"requirementsTooltip": "Unlocked in City Phase.",
 	"icon": "pers_hundred_columns.png",
 	"researchTime": 60,
-	"tooltip": "+25% HP and -50% build time for Civic Centres, Temples, Pyramids and Wonders.",
+	"tooltip": "+25% HP and -50% build time for Civic Centers, Temples, Pyramids and Wonders.",
 	"modifications": [
 		{ "value": "Health/Max", "multiply": 1.25 },
 		{ "value": "Cost/BuildTime", "multiply": 0.5 }