diff --git a/geocoder/admin0/data/admin0_synonym_additions.csv b/geocoder/admin0/data/admin0_synonym_additions.csv
new file mode 100644
index 0000000..7be0c15
--- /dev/null
+++ b/geocoder/admin0/data/admin0_synonym_additions.csv
@@ -0,0 +1,55 @@
+adm0_a3,name,notes,rank
+ALD,ALA,,10
+ATF,French Southern Territories,data source: openmundi,10
+ATG,Antigua & Barbuda,,10
+BHS,"Bahamas, The",data source: world bank,10
+BIH,Bosnia & Herzegovina,,10
+BRN,Brunei Darussalam,data source: openmundi,10
+CHN,China (PRC),,10
+CIV,Cote d'Ivoire,data source: world bank,10
+COD,Democratic Republic of the Congo,,10
+COD,Congo DR,data source: openmundi,10
+COD,Democratic Republic of Congo,,10
+COD,Democratic republic of the Congo,,10
+COD,"Congo, Dem. Rep.",data source: world bank,10
+COG,The Republic of the Congo,,10
+COG,"Congo, Rep.",data source: world bank,10
+COG,Congo (CG),,10
+EGY,"Egypt, Arab Rep.",data source: world bank,10
+FLK,Malvinas,,10
+GIN,Equatorial Guinea,data source: world bank,10
+GMB,"Gambia, The",data source: world bank,10
+GUF,French Guiana,,10
+HKG,"Hong Kong SAR, China",data source: world bank,10
+IRN,"Iran, Islamic Rep.",data source: world bank,10
+KOR,"Korea, Rep.",data source: world bank,10
+LAO,Lao PDR,data source: world bank,10
+LCA,Sant Lucia,,10
+LCA,St. Lucia,,10
+LVA,Latvian Rep,,10
+LVA,Latvian Republic,,10
+MAF,Saint Martin (French),data source: openmundi,10
+MEX,Méjico,,10
+MKD,"Former Yugoslav Republic of Macedonia, the",,10
+MNP,Northern Marianas,,10
+NFK,Norfolk Islands,,10
+NOR,NO,,10
+PCN,Pitcairn,data source: openmundi,10
+PRK,"Korea, Dem. Rep.",data source: world bank,10
+PSX,State of Palestine,,10
+REU,Réunion,,10
+SDS,SSD,,10
+SDS,South Sudan,data source: world bank,10
+SGS,South Georgia and the South Sandwich Islands,data source: openmundi,10
+SPM,Sant Pierre & Miquelon,,10
+STP,Sao Tome,,10
+SVK,Slovak Rep,,10
+SXM,Sint Maarten (Dutch),data source: openmundi,10
+TCA,Turks and Caicos,,10
+TTO,Trinidad & Tobago,,10
+VAT,Vatican City,data source: openmundi,10
+VCT,Sant Vincent and the Grenadines,,10
+VEN,"Venezuela, RB",data source: world bank,10
+VGB,Virgin Islands (British),data source: openmundi,10
+VIR,Virgin Islands (US),data source: openmundi,10
+YEM,"Yemen, Rep.",data source: world bank,10