| Similarity | Rank | |
|---|---|---|
| in_American_history | 0.859 | 33694 |
| in_recent_history | 0.643 | 63781 |
| in_human_history | 0.615 | 48002 |
| world_history | 0.611 | 28733 |
| U.S._history | 0.579 | 74846 |
| in_its_history | 0.569 | 46144 |
| since_World_War_II | 0.562 | 67848 |
| in_recent_memory | 0.561 | 69337 |
| in_the_United_States | 0.541 | 1332 |
| history | 0.535 | 354 |
| American_history | 0.532 | 28141 |
| one_of_America | 0.513 | 66793 |
| in_America | 0.504 | 2624 |
| the_nation_large | 0.491 | 39533 |
| our_history | 0.491 | 12200 |
| the_history_of | 0.480 | 1208 |
| modern_history | 0.476 | 93951 |
| the_Civil_Rights_Movement | 0.474 | 62659 |
| Hurricane_Katrina | 0.468 | 34105 |
| ever | 0.465 | 1113 |
| in_Louisiana | 0.465 | 18565 |
| nation_first | 0.464 | 49961 |
| in_Mississippi | 0.462 | 23716 |
| the_American_Civil_War | 0.459 | 99889 |
| Congress_pass | 0.453 | 65211 |