Add Puerto Rico to pre-1994 United States relations

Fix Kingdom of Yugoslavia maritime boundaries

Fix Markgrafschaft Istrien maritime boundaries

Fix Küstenland maritime boundaries

Clean up (Dalmatia and Croatia-Slavonia border)

Fix Cisleithania maritime boundaries

Fix Kingdom of Montenegro maritime boundaries

Fix Austria-Hungary maritime boundaries

Fix Principality of Montenegro

Add Puerto Rico boundary

Add Guam boundary

Clean up (Pennsylvania-Maryland and Delaware border)

Clean up (New Hampshire borders)

Clean up (Maine-New Hampshire border)

Fix error in the Maine-New Hampshire border

Fix New Castle County

Fix Alameda County

Fix Del Norte County

Fix Orange County

Correct border of the American occupation zone in Germany (Bremerhaven)