In the history of Europe the areas known as Rhineland have been fought over many times. Rhineland itself has moved and shifted. If you put a date on it, you will get a better answer.
France and Germany
The Rhineland shared borders with Belgium, the Netherlands, and Luxembourg.
Prussia received the majority of the Rhineland during the Congress of Vienna. Prussia received the majority of the Rhineland because they only received half of Saxony and shared Poland with Russia and Austria.
western germany along the french border, it was called the "Rhineland"
Adjacent to the Rhine region of Germany are Luxembourg, Belgium, and France.
Colorado's western border is shared with Utah.
When countries share a border, it is called a "land border" or a "physical border".
German region on the French and Belgian border that hitler reoccupied despite it being demilitarized by the Treaty of Versailles.
Slow, but very effective
Not to be shared outside this nation!
China, Russia, Turkmenistan, Uzbekistan, and Kyrgyzstan.Kazakhstan's northern border is shared with Russia, and is one of the longest continuous land borders in the world. Its eastern border is shared with China. Its southern border is shared with (east to west) Kyrgyzstan, Uzbekistan, and Turkmenistan. It is bounded on the west by the Caspian Sea.
Bangladesh shares the largest border with India; their shared border is 4,053 kilometers long. At 1,463 kilometers long, Burma has the second-longest shared border with India.