| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| when did europe open its borders | 0.3 | 0.6 | 5661 | 60 |
| history of european borders | 1.91 | 0.9 | 8274 | 40 |
| does europe have open borders | 0.84 | 0.1 | 7478 | 57 |
| european border established in 1945 | 1.92 | 0.7 | 6569 | 63 |
| open borders in europe | 0.1 | 0.9 | 7390 | 98 |
| europe borders over time | 1.82 | 0.4 | 4156 | 22 |
| when did the border open | 1.48 | 0.4 | 5260 | 26 |
| european borders over time | 0.69 | 0.1 | 2928 | 30 |
| do european countries have open borders | 0.29 | 0.5 | 6317 | 22 |
| european union open borders | 0.45 | 0.6 | 7356 | 81 |
| borders of europe in 1688 | 1.4 | 0.4 | 8984 | 39 |
| when did borders start | 0.35 | 0.9 | 1160 | 4 |
| does eu have open borders | 1.3 | 0.4 | 6114 | 11 |
| how long have the borders been open | 0.16 | 1 | 1144 | 39 |
| europe and asia border history | 1.56 | 0.9 | 7165 | 93 |
| europe borders before ww2 | 1.92 | 0.4 | 1473 | 41 |
| borders closed in europe | 0.73 | 0.4 | 9131 | 36 |
| when were borders created | 1.25 | 0.6 | 2237 | 77 |
| when was the border opened | 0.4 | 0.2 | 2247 | 26 |
| european borders before and after ww1 | 0.6 | 0.8 | 6635 | 33 |
| european borders before world war ii | 0.88 | 0.2 | 8094 | 5 |
| history of country borders | 0.1 | 0.6 | 7721 | 93 |
| history of world borders | 0.46 | 0.4 | 6583 | 81 |
