The maginot line
The south west border of Germany is shared with Switzerland and the south eastern border is Austria.
The Rhineland shared borders with Belgium, the Netherlands, and Luxembourg.
France and Germany
There is no border that is shared by Germany and Spain. The only lake in that direction is Lake Constance, which forms part of the border between Germany and Switzerland.
Lake Victoria. Its shores are shared between Kenya, Uganda and Tanzania.Lake Constance. Shared between Austria, Germany and Switzerland.Lake Great Prespa. Shared between Albania, Macedonia, Greece.
Colorado's western border is shared with Utah.
Sweden shares its longest border with Norway, which is located to the West of the country. This border is 2542 miles long. Its Eastern border is shared with Finland and is much shorter, about 1/3 that length.
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.
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.
When countries share a border it is referred to as a "common or shared" border.
California's southern border is shared with the country of Mexico.
Italy's northern border is shared with Austria.