Fix gaps in 19th century United States relations

Fix gap in Macon County, North Carolina

Fix gap in Egg Harbor City relation

Fix gap in Courland Governorate relation

Add United States relation (1848-1853)

Complete boundary for United States post-Oregon Treaty

Fix gap in Württemberg-Baden (1945-1952) relation

Fix United States relation (1994- )

Fix United States relation (1845-1846)

Fix 19th century United States relations

Correct border around Arkansas United States relation (1842-1845)

Correct border around Maine United States relation (1842-1845)

Correct end_date for United States relation (1821-1842)

Add territorial sea around Florida to United States relation (1842-1845)

Add territorial sea around Louisiana to United States relation (1842-1845)

Add Block Island and Mount Desert Rock to United States relation (1783-1803)

Fix gap in United States (1842-1845) relation

Fix gap in United States relation (1783-1803)

Fix gap in United States relation

Fix gap in Massachusetts (1783-1804)