, the United States did not officially join the League of Nations due to opposition from isolationists in Congress.
It is technically a legal document, and it is binding. Which makes it unique from other types of documents. I’m not sure what you mean in regards to “tool”. But I would think it would be considered a reference document
The renaissance gave way to enlightenment and rebirth. This period of time allowed the modern era to break off from its past medieval era. The renaissance allowed Europe to rise up and be what it is today.
The Bill of Rights is the historical document that upholds these important principles.