Question

when did japan lose control of north korea

Answer 1

The annexation of Korea by Japan was set up in the Japan–Korea Treaty of 1910, which was never actually signed by the Korean regent, Gojong. Imperial Japanese rule over Korea ended in 1945, when American and Soviet forces liberated the peninsula.

Answer 2

Answer:

the U.S. took control over North Korea.

Explanation:

this dude got a better explanation even if my answer is different.

the soviet union just made the assist for the U.S.

(this is my thought) sorry if answer is wrong, I'm only trying to help.