"Večji začetni bonus za nove državljane jim bo omogočil boljši start in mogoče kdo ostane dlje časa :)"
This bonus is a reward the country pays from its budget when a town gains a new citizen. The value is how much each reward pays out.
Raising the value pays a bigger reward each time, which makes the rewarded action more attractive but spends the country budget faster.
Lowering the value pays a smaller reward each time, which saves the country budget but gives citizens less incentive.
This is a neutral explanation to help you decide — it doesn't favor either side.