Region
20th century
1
Abidjan
2
Abuja (Federal Capital Territory, Nigeria)
2
Afghanistan
1
Africa
38
Africa, Southern
2
Africa, Sub-Saharan
10
Africa, West
3
Alabama
4
Alaska
1
Albany
1
Amazon River Region
2
America
11
Andhra Pradesh
1
Angola
1
Annapolis (Md.)
2
Appalachian Region
2
Arab countries
12
Arabian Sea
1
Arctic regions
1
Arezzo (Italy)
2
Argentina
14
Arizona
2
Arkansas
1
Asia
47
Asia Oriental
1
Asie
1
Asie de l'Est
1
Asie du Sud-Est
1
Atlanta
3
Atlantic Ocean Region
5
Austin (Tex.)
1
Australia
19
Australian Capital Territory
4
Austria
2
BRIC countries
1
Bajío Region
1
Bajío Region (Mexico)
1
Bajío Region
1
Bajío Region (Mexico)
1
Baltic States
2
Baltic states
1
Baltimore
3
Baltimore (Md.)
2
Bangalore
2
Bangkok
3
Bangkok (Thailand)
1
Bangladesh
3
Barcelona
2
Belarus
1
more ...