Borders
From Rival Regions Wiki
If the borders of the region or state are closed you will be able to travel there only if you have a residency or a work permit.
Borders can remain open too. You need to spend resources from the budget to keep you borders closed.
Here you can see the ammount of resources needed:
| Resources | Spendings (for 1 minute in 1 region) |
|---|---|
| $ | 500.000 |
| G | 400.000 |
| Ore | 500 |
| Oil | 500 |
| Uranium | 20 |
| Diamonds | 0.5 |
You can navigate to Maps and select a filter, which will show where the borders are closed and where they are opened.