Region
United States
448
Great Britain
53
Australia
7
China
5
Japan
5
Canada
4
Europe
4
Mexico
4
Solar system
4
Soviet Union
4
Tennessee
4
Africa
3
Asia
3
California
3
Greece
3
Michigan
3
North America
3
Rome
3
England
2
India
2
New York
2
New York (State)
2
Russia
2
Texas
2
West (U.S.)
2
États-Unis
2
Alaska
1
Antarctica
1
Books and reading
1
Central America
1
Ciudad Juárez
1
Detroit
1
Earth (Planet)
1
Education (Elementary)
1
Education (Secondary)
1
Egypt
1
El Paso
1
English-speaking countries
1
France
1
Germany
1
Gettysburg National Military Park (Pa.)
1
Hiroshima-shi
1
Hunters Point (San Francisco, Calif.)
1
Iraq
1
Israel
1
Jimmy Carter National Historic Site (Plains, Ga.)
1
Kenya
1
Kuwait
1
Mars (Planet)
1
Media
1
more ...