| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| iron was used extensively by the sumerians | 1.33 | 0.4 | 882 | 54 | 42 |
| iron | 1.22 | 0.5 | 9510 | 16 | 4 |
| was | 1.8 | 0.3 | 6677 | 88 | 3 |
| used | 1.6 | 0.1 | 1232 | 6 | 4 |
| extensively | 2 | 0.9 | 2847 | 33 | 11 |
| by | 1.13 | 0.6 | 1480 | 77 | 2 |
| the | 0.64 | 0.6 | 6342 | 19 | 3 |
| sumerians | 1.17 | 0.1 | 486 | 47 | 9 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| iron was used extensively by the sumerians | 0.86 | 0.3 | 9392 | 39 |
| what metal did sumerians learn to use | 1.4 | 0.5 | 2850 | 27 |
| what civilization was first to use iron | 1.77 | 0.7 | 7883 | 26 |
| the sumerians mainly used cuneiform to | 0.7 | 0.8 | 6011 | 81 |
| what all did the sumerians invent | 0.66 | 0.2 | 5472 | 66 |
| what was iron first used for | 0.39 | 0.6 | 9013 | 24 |
| what were the contributions of the sumerians | 0.93 | 0.7 | 9073 | 43 |
| what supplies did the sumerians have | 0.82 | 0.6 | 9851 | 68 |
| sumerians are credited with the invention of | 1 | 0.6 | 6802 | 33 |
| what did the ancient sumerians invent | 1.11 | 0.2 | 5697 | 17 |
| what tools did the sumerians invent | 1.2 | 0.2 | 2972 | 44 |
| question what did the sumerians invent | 0.35 | 0.9 | 829 | 69 |
| things the sumerians invented | 0.88 | 0.5 | 6616 | 96 |
| what did sumerians use to produce cuneiform | 0.01 | 0.7 | 8566 | 68 |
| sumerians first used but later developed | 1.74 | 0.6 | 1267 | 84 |
| how were the ancient sumerians resourceful | 1.45 | 0.6 | 3727 | 71 |
| how were the ancient sumerians ingenious | 1.7 | 0.2 | 1444 | 40 |
| sumerian tools and weapons | 1.95 | 0.4 | 5673 | 8 |
