North Korea and China.
China and North Korea
The two rivers that form the northern border of North Korea are the Yalu River and the Tumen River.
The Yalu River divides China and North Korea.
There were two, the first in 1894 was a naval battle with the Japanese beating the Chinese. The second Battle of Yalu River was in 1904. This was a land battle with he Japanese winning against Russia.
The Tumen and Yalu Rivers are the two main natural borders with China
The boundary between Korea and Manchuria, also known as the Korean-Manchurian border, was primarily established along the Yalu River. This river served as a natural boundary dividing the two regions. The border has gone through some changes over time due to various historical events and political agreements between the two countries.
The Yalu River and the Tumen River form the northern border of North Korea.
haiti and bahamas
Japan and the Philippines.
congo,zaire
Mexico and Cuba are the two Spanish-speaking countries closest to the US geographically.
Mekong River
chile and new zeland of course