| Similarity | Rank | |
|---|---|---|
| U.S._history | 0.719 | 74846 |
| European_history | 0.717 | 79644 |
| modern_history | 0.706 | 93951 |
| World_history | 0.701 | 92874 |
| American_history | 0.700 | 28141 |
| history | 0.666 | 354 |
| in_American_history | 0.664 | 33694 |
| in_human_history | 0.660 | 48002 |
| human_history | 0.646 | 48428 |
| in_U.S._history | 0.611 | 60655 |
| our_history | 0.582 | 12200 |
| world_religion | 0.581 | 58513 |
| Western_civilization | 0.579 | 49206 |
| economic_history | 0.577 | 74908 |
| political_history | 0.573 | 61414 |
| the_history_of | 0.572 | 1208 |
| historical_event | 0.572 | 31250 |
| ancient_civilization | 0.571 | 79188 |
| historiography | 0.563 | 45319 |
| world_culture | 0.563 | 96213 |
| American_literature | 0.560 | 78300 |
| ancient_history | 0.552 | 41207 |
| international_politics | 0.552 | 60455 |
| Jewish_history | 0.549 | 58258 |
| historical_period | 0.549 | 84884 |