When is the earliest date a multi-national UN-like organization could be established? Although until the end of WW1 the diplomatic environment generated by the great powers made it pretty hard to facilitate international cooperation. That being said there are several instances of such cooperation.
The Boxer Rebellion. Almost unanimous intervention by the Great Powers on behalf of westerners being assaulted by Chinese rebels.
The Berlin Conference. Instead of making war the Great Powers decide to go resolve their differences diplomatically.
A bit early but one could also cite the condemnation of slavery by European powers and subsequent lack of support for the Confederacy.
So what is the earliest possible date for this to happen and what kind of event would perpetuate the creation of such an organization?
The Boxer Rebellion. Almost unanimous intervention by the Great Powers on behalf of westerners being assaulted by Chinese rebels.
The Berlin Conference. Instead of making war the Great Powers decide to go resolve their differences diplomatically.
A bit early but one could also cite the condemnation of slavery by European powers and subsequent lack of support for the Confederacy.
So what is the earliest possible date for this to happen and what kind of event would perpetuate the creation of such an organization?