Roughly added Zemplén county (mostly based on the 2nd survey)

Added 1860-76 Heves county

Added Liptó and Árva counties

Added basic version of the "Between the Danube and Tisza" statistical region (I'm not really sure how they work vs administrative divisions)

Added post-1876 Bihar county; Implemented border change between Heves and Jász-Nagykun-Szolnok (1902 used as transition date as this whas the earliest I could find evidence of the change but it may have happened much earlier)

Roughly added Heves exclave between the Jászkunság and Bekes

Added post-1876 Heves and Jász-Nagykun-Szolnok counties and some missing exclaves of Pest/Heves in the Jászság

Added Zólyom county post-1860 and made amendment to Nógrád

Added pre-1800s Nógrád county

Added pre-1850s Zólyom county

Fixed Ottoman Empire relations either side of 1812; added Greek and Italian names and more specific dates to the United States of the Ionian Islands; fixed label and place for Kingdom of Prussia relations

Minor boundary tweak to non-1850s Esztergom county

Roughly added Szilágy county

Added Hungary (1751-79) and tweaked various other Hungary relations (mostly adding more specific dates and moving labels around); Added labels for Royal and Eastern Hungary

Amended/corrected the Jászság pre-1850 and post-1860

corrected border (Heves és Külső-Szolnok/Bekes)

Minor improvements/tweaks to a section of the Nórgrád-Hont border

Made some Czechoslovak dates more specific and added official names to Czechoslovakia 1948-92

Tweaked some boundaries, mostly pre-1850

Added some earlier versions of Szatmár county (very rough and incomplete)