I looked at Gazebo's ZIP file and thought it might come in handy to post it all here:
CivilizationType,StartAlongOcean
CIVILIZATION_ENGLAND,1
CIVILIZATION_JAPAN,1
CIVILIZATION_POLYNESIA,1
CIVILIZATION_DENMARK,1
CIVILIZATION_CARTHAGE,1
CIVILIZATION_SPAIN,1
CIVILIZATION_BYZANTIUM,1
CIVILIZATION_INDONESIA,1
CIVILIZATION_KOREA,1
CIVILIZATION_PORTUGAL,1
CIVILIZATION_VENICE,1
CIVILIZATION_NETHERLANDS,1
///
CivilizationType,StartAlongRiver
CIVILIZATION_SONGHAI,1
CIVILIZATION_NETHERLANDS,1
CIVILIZATION_EGYPT,1
CIVILIZATION_INDIA,1
CIVILIZATION_BABYLON,1
CIVILIZATION_CHINA,1
CIVILIZATION_ASSYRIA,1
///
Terrain to avoid:
CivilizationType,RegionType
CIVILIZATION_EGYPT,REGION_JUNGLE
CIVILIZATION_EGYPT,REGION_FOREST
CIVILIZATION_SONGHAI,REGION_TUNDRA
CIVILIZATION_ASSYRIA,REGION_TUNDRA
CIVILIZATION_BABYLON,REGION_TUNDRA
CIVILIZATION_HUNS,REGION_FOREST
CIVILIZATION_HUNS,REGION_JUNGLE
CIVILIZATION_ZULU,REGION_JUNGLE
///
Starting bias:
CivilizationType,RegionType
CIVILIZATION_ARABIA,REGION_DESERT
CIVILIZATION_AZTEC,REGION_JUNGLE
CIVILIZATION_IROQUOIS,REGION_FOREST
CIVILIZATION_MONGOL,REGION_PLAINS
CIVILIZATION_INCA,REGION_HILLS
CIVILIZATION_CELTS,REGION_FOREST
CIVILIZATION_NETHERLANDS,REGION_GRASS
CIVILIZATION_AUSTRIA,REGION_HILLS
CIVILIZATION_BRAZIL,REGION_JUNGLE
CIVILIZATION_MONGOL,REGION_PLAINS
CIVILIZATION_MOROCCO,REGION_DESERT
CIVILIZATION_POLAND,REGION_PLAINS
CIVILIZATION_OTTOMAN,REGION_HILLS
CIVILIZATION_GREECE,REGION_HILLS
CIVILIZATION_AMERICA,REGION_FOREST
CIVILIZATION_SIAM,REGION_JUNGLE
CIVILIZATION_SIAM,REGION_FOREST
CIVILIZATION_HUNS,REGION_PLAINS
CIVILIZATION_ZULU,REGION_PLAINS
CIVILIZATION_POLAND,REGION_GRASS
CIVILIZATION_FRANCE,REGION_GRASS
CIVILIZATION_GERMANY,REGION_GRASS
CIVILIZATION_CELTS,REGION_HILLS
CIVILIZATION_ROME,REGION_GRASS
CIVILIZATION_SHOSHONE,REGION_GRASS
CIVILIZATION_GERMANY,REGION_FOREST
CIVILIZATION_MAYA,REGION_JUNGLE
CIVILIZATION_PERSIA,REGION_HILLS
CIVILIZATION_ETHIOPIA,REGION_HILLS
CIVILIZATION_EGYPT,REGION_DESERT