Question: Which two countries have the longest continuous international land border?
Answer: The border between Kazakhstan and Russia is not only the second-longest in the world but also the longest continuous international land border. It begins in the west along the Caspian Sea and stretches for 4,750 miles eastward, ending at a tripoint with China. Most of the border runs through the Eurasian Steppe region and the Altai mountain range. There have been very few disputes regarding this border, and it has remained largely unchanged since the time of the Soviet Union.
