| Border | % Correct |
|---|---|
| Colorado-New Mexico | 92%
|
| Idaho-Washington | 92%
|
| Arizona-Utah | 89%
|
| Illinois-Iowa | 89%
|
| Colorado-Nebraska | 88%
|
| Iowa-Missouri | 88%
|
| New Hampshire-Vermont | 87%
|
| Indiana-Michigan | 82%
|
| New York-Vermont | 82%
|
| Arkansas-Mississippi | 81%
|
| Michigan-Ohio | 79%
|
| Georgia-Tennessee | 75%
|
| Maryland-Virginia | 75%
|
| Massachusetts-Vermont | 75%
|
| New Mexico-Oklahoma | 73%
|
| Delaware-Maryland | 63%
|
| Kentucky-Missouri | 63%
|
| Connecticut-Rhode Island | 56%
|
| Michigan-Wisconsin | 54%
|
| Delaware-Pennsylvania | 31%
|