Japan received them in 1920 as a League of Nations mandate.
A League of Nations mandate was legally very different from a colony.
In 1920 this was formalized by a 15-year League of Nations mandate.
Iraq, which joined in 1932, was the first member that had previously been a League of Nations Mandate.
"It was the monarchy that achieved independence for Iraq from the League of Nations mandate," he said.
Nauru was administered by Australia under a League of Nations mandate.
This was incorporated in the League of Nations Mandate for Palestine.
This was a radical break with the League of Nations Mandate under which the islands had been peacefully administered.
The main aim of the congress was to try to influence the terms of the proposed League of Nations mandate over the region.
France occupied Syria under a League of Nations mandate.