The answer to your question is choosing websites that end in edu or .gov. Websites still need to be updated, you can use it for information if it’s not too recent but don’t use it as a source. If it has multiple authors there is a possibility that some things can be mixed up or certain parts are false for by one person and the other side is true done by another. ( but that is just hypothetical) using verified websites is the best option because you could get loads of information from them and it could possibly be easier to use and understand, plus it should be updated and not have many authors.
The second one,
Kennedy specifically addresses groups of nations.
