| Year | State | Country | % Correct |
|---|---|---|---|
| 1850s | California | Mexico | 95%
|
| 1850s | Texas | Germany | 94%
|
| 1860s | California | China/Mongolia/Taiwan | 93%
|
| 1910s | Hawaii* | Japan | 90%
|
| 1910s | New York | Russia/USSR | 90%
|
| 1870s | Colorado* | United Kingdom | 90%
|
| 1900s | Louisiana | Italy | 86%
|
| 1880s | Florida | Cuba | 85%
|
| 1900s | Minnesota | Sweden | 84%
|
| 1850s | Vermont | Canada | 83%
|
| 1850s | New York | Ireland | 83%
|
| 2000s | Ohio | India | 82%
|
| 1960s | Hawaii | Philippines | 82%
|
| 1930s | South Carolina | Poland | 81%
|
| 1990s | Virginia | South Korea | 81%
|
| 1900s | North Dakota | Norway | 78%
|
| 1980s | Louisiana | Vietnam | 78%
|
| 1990s | New York | Dominican Republic | 75%
|
| 1950s | South Carolina | Greece | 65%
|
| 1990s | Massachusetts | Portugal | 65%
|
| 1910s | Pennsylvania | Austria | 60%
|
| 1980s | District of Columbia | Jamaica | 57%
|
| 1990s | District of Columbia | El Salvador | 45%
|
| 2010s | South Dakota | Ethiopia | 43%
|
| 1990s | Minnesota | Laos | 36%
|
| 1860s | Florida | Bahamas | 27%
|