| cannabis history of origin and use | 0.81 | 1 | 203 | 34 | 71 |
| origin and history of marijuana | 0.84 | 0.2 | 656 | 31 | 19 |
| cannabis use in history | 1.98 | 0.9 | 1392 | 23 | 15 |
| ancient history of cannabis | 1.54 | 0.6 | 3338 | 27 | 52 |
| what is the origin of cannabis | 0.13 | 0.7 | 1185 | 30 | 13 |
| first documented use of cannabis | 1.68 | 0.2 | 8469 | 32 | 53 |
| origin of marijuana use | 0.11 | 0.9 | 7220 | 23 | 15 |
| the history of cannabis in america | 0.67 | 0.9 | 9601 | 34 | 15 |
| history of marijuana use | 0.95 | 0.1 | 8794 | 24 | 76 |
| origins of marijuana history | 1.1 | 0.9 | 7942 | 28 | 90 |
| when did cannabis originate | 1.21 | 0.7 | 950 | 27 | 89 |
| early history of marijuana | 1.48 | 0.6 | 2398 | 26 | 92 |
| today in cannabis history | 1.97 | 0.5 | 7616 | 25 | 40 |
| earliest known cannabis use | 1.03 | 0.3 | 3382 | 27 | 60 |
| when was cannabis first used | 1.01 | 0.2 | 2231 | 28 | 19 |
