They are the same as the geographical borders and were fixed (in effect) at the end of World War 2 and recognized definitively by Germany in 1990.
Germany
There is no more East and West Germany. Just Germany now
The anti-communist political shift led to the closing of the borders.
No Liechtenstein only borders Austria and Switzerland
Luxembourg
Luxembourg is a small country that shares borders with Germany, France, and Belgium.
natural borders
Luxembourg borders with France, Germany, and Belgium.
Neither is the answer. Liechtenstein borders Austria and Switzerland. Luxembourg borders Germany, Belgium and France.
Luxembourg borders Belgium, France, and Germany.
Czechia (also known as the Czech Republic) borders both Germany and Poland.
Czechia (also known as the Czech Republic) borders both Germany and Poland.
Germany is. It borders Switzerland.
Germany borders France to the Northeast.
Germany
Germany is bordered by the North Sea and the Baltic Sea to the north.
Time zone borders are jagged because they follow political borders.