A more thorough explanation:

Definition: Demilitarization is a process in international law where a country agrees not to have military forces or installations in certain areas or zones within its territory.

Example: After World War II, Japan was required to undergo demilitarization. This meant that Japan had to give up its military forces and could not have any military bases or installations in certain areas.

Explanation: The example illustrates how demilitarization works in practice. Japan was required to give up its military forces and could not have any military bases or installations in certain areas. This was done to prevent Japan from becoming a military threat again and to promote peace and stability in the region.