| Similarity | Rank | |
|---|---|---|
| political_history | 0.719 | 61414 |
| world_history | 0.706 | 28733 |
| history | 0.683 | 354 |
| European_history | 0.678 | 79644 |
| recent_history | 0.654 | 59427 |
| military_history | 0.647 | 45278 |
| cultural_history | 0.638 | 33672 |
| ancient_history | 0.635 | 41207 |
| American_history | 0.624 | 28141 |
| historiography | 0.617 | 45319 |
| human_history | 0.615 | 48428 |
| economic_history | 0.608 | 74908 |
| social_history | 0.608 | 46374 |
| our_history | 0.602 | 12200 |
| the_history_of | 0.599 | 1208 |
| U.S._history | 0.579 | 74846 |
| Jewish_history | 0.579 | 58258 |
| in_American_history | 0.572 | 33694 |
| historical_narrative | 0.572 | 68629 |
| church_history | 0.568 | 55914 |
| art_history | 0.563 | 15911 |
| literary_history | 0.561 | 99033 |
| twentieth_century | 0.561 | 56294 |
| historian | 0.559 | 4549 |
| prehistory | 0.557 | 81951 |