以下、英語版ウィキペディアの記事からの引用です。
"History of Esperanto"
In the early 1920s, there was a proposal for the League of Nations to accept Esperanto as their working language.
Ten delegates accepted the proposal with only one voice against, the French delegate, Gabriel Hanotaux.
Hanotaux did not like how the French language was losing its position as the international language and saw Esperanto as a threat.
However, two years later the League recommended that its member states include Esperanto in their educational curricula.
Many people see the 1920s as the heyday of the Esperanto movement.
