Which nation was defeated at the battle of midway after its plans of an attack were intercepted?

Japanese nation.

Explanation:

Hello!

The battle of Midway took place between June 4 and 7, 1942, in the framework of World War II. In this combat, the American Navy forces prevented the destruction of a US military base, which was located in the Midway Atoll, by the Japanese Navy.

The attack plans of the Japanese had been intercepted by the American analysts, who partially deciphered the JN-25b code of the Japanese Imperial Navy. This generated great strategic advantages for the American forces.

After the battle, the Japanese army received a tough defeat, which marked the end of the plans for the expansion of Japan in the Pacific.

Success in your homework!