Costa Rica cut diplomatic relations with Germany 1917

On this day, on September 21, the Costa Rican Government decided to cut relations ties with Berlin.

Johnson State

On September 1917, should Tinoco break with Germany, and you are appoached by any of those persons connected with him in regard to the granting the United States of safe conduct to German representative in Costa Rica, you instructed to say that if the representative of some neutral state asks you can on behalf of German representative for safe conduct, Government of the United States will grant it for him to return to Germany, so far as it concerns the American Forces.