Borders can remain open too. You need to spend resources from the budget to keep your borders closed.
كما انك تحتاج إلى موارد لكي يعطي الحاكم .
All this can be regulated by passing the specific laws.
|Resources||Spendings (for 1 minute in 1 region)|
You can navigate to Maps and select a filter, which will show where the borders are closed and where they are opened.