Fix end_date for German Reich (1941-1945)

Fix a small error in the Louisiana-Texas border

Correct Brandenburg relations (add border with Berlin)

Fix gap in Niederung

Fix Graudenz relations

Fix gap in Neidenburg

Fix gap in Franzburg and Grimmen

Fix gap in Braunschweig

Fix gap in Ziegelhausen

Fix gap in Kirchheim

Fix gap in Brandenburg

Fix gap in Mecklenburg (1701-1868)

Fix gap in Byron and Wyoming Townships, Michigan

Fix gap in Pennsylvania relations

Fix gap in Bucks County, Pennsylvania

Fix gap in Washington County, Maine

Fix gap in City of New York (1898-)

Fix gap in German Reich (1936-1938)

Fix gap in German Reich (1920 08-11)

Fix gap in Rock County, Nebraska