| Similarity | Rank | |
|---|---|---|
| world_history | 0.717 | 28733 |
| World_history | 0.706 | 92874 |
| American_history | 0.685 | 28141 |
| U.S._history | 0.684 | 74846 |
| modern_history | 0.678 | 93951 |
| Jewish_history | 0.643 | 58258 |
| historiography | 0.634 | 45319 |
| ancient_history | 0.632 | 41207 |
| economic_history | 0.627 | 74908 |
| cultural_history | 0.621 | 33672 |
| art_history | 0.619 | 15911 |
| American_literature | 0.618 | 78300 |
| European_culture | 0.616 | 67341 |
| political_history | 0.611 | 61414 |
| Western_civilization | 0.609 | 49206 |
| history | 0.608 | 354 |
| music_history | 0.600 | 86096 |
| American_Studies | 0.595 | 54309 |
| the_Middle_Ages | 0.595 | 50560 |
| military_history | 0.593 | 45278 |
| the_Holocaust | 0.593 | 12630 |
| American_Literature | 0.591 | 97833 |
| Church_history | 0.586 | 84538 |
| the_Crusades | 0.584 | 69798 |
| Art_history | 0.577 | 43652 |