fix errors in Croatia-slavonia

correct border around Bihać (Croatia-slavonia and Bosnia and Herzegovina)

fix error in Vojvodina (1968-1990)

add start and end dates (Vojvodina (1968-1990))

name in latin script for yugoslavia

improve Belgium-Netherlands Border using Large Scale Internatonal Bounderies from U.S. Dept. of State

improve Luxembourg-France border and Luxembourg-Germany Border part 2

improve Luxembourg-Belgium Border

improve Luxembourg-Germany Border part 1.5 (a quick fix)

improve Luxembourg-Germany Border part 1

fix part of boundery (West Germany and Denmark)

Add North Yemen and South Yemen

add missing part of the boundery (Austria (1945-) and Austria (1921-1938)) again

add missing part of the boundery (Austria (1945-) and Austria (1921-1938))

add missing part of the boundery (Free Territory of Trieste)

add label (Soviet Union (1951-1991))

improve the border with hungary, a seventh time (Romania (1881-1913))

add boundery of the United States (1783-1803) part 5

add boundery of the United States (1783-1803) part 4

add boundery of the United States (1783-1803) part 3