if you are asking which to nations it is Pakistan and India
Argentina and The United Kingdom.
In the late 1940s and again in 1972, India and Pakistan fought wars primarily over the disputed region of Kashmir. The conflict arose after the partition of British India in 1947, which led to the division of the two nations and the subsequent claim over Kashmir by both. The first war occurred in 1947-1948 shortly after independence, while the second war in 1971 was linked to the Bangladesh Liberation War, with Kashmir remaining a central issue in Indo-Pak relations. These conflicts have had lasting implications on the geopolitical landscape of South Asia.
Britain and Mexico
Britain & Mexico
India and Pakistan
There were more than two nations dude, Britain, America, France, Russia, Canada, Some Italians, Australia fought the AXIS
India and Pakistan.
Many people claim that the Kashmir dispute is the unfinished agenda of the partition plan. By this they imply that the solution of the Kashmir dispute should be looked in the light of two nations theory under which India was partitioned; or in the light of the UN Resolutions which deny the Kashmir people the right to determine their own future.
The two states that fought over the strip of Toledo are Michigan and Ohio.
The Allied Nations fought against the Axis Powers. This was the United Kingdom, France, the United States, Canada, Australia and Soviet Union. Many other nations also sided with the Allied Nations.
Kashmir is the basic issue between the two countries. Because of this issue both countries have fought many wars.