Well done so far.
A few more minor suggestions:
- We refer to the regions of Hungary as Dunántúl, Duna-Tisza köze, Tiszántúl. "Hungary" is not part of these region names, it is not necessary to indicate it as e.g. "Dunántúl Hungary" on the legend. Especially that now only Hungary and 2 regions of Poland have green background. If you still think that there is a need for the word "Hungary" on this part of the legend, then you could update the title from Safe Land Bonus to Safe Land Bonus in Hungary, or something similar.
- On a related note, I think it would make sense if Poland had a different colour, other than green.
- I could be mistaken, but I think that if you refer to more than one bonus on the legend, then you would need the plural form (bonuses). If you implement my first suggestion above then you will have more space for the longer names.
- One of the Hungarian regions is not a county like the rest, but a city: I would suggest to replace Debrecen with another name.
Szabolcs-Szatmár-Bereg and Hajdú-Bihar more or less lay on the indicated area (you could shorten the first, if needed).http://www.mfa.gov.ua/hungary/hun/2458.htm