There are five major components to research and these are:
Who are we talking about?
This may be a person, company, product, political party, movement etc.
Be specific about the topic/thing you are discussing. The more informed you are the better sounding it’ll be.
Be specific as this adds context. Paris, 1922 is very different to London, 1968.
When did the thing occur? Year, generation, era, etc.
Why did this thing happen? Need? Fashion? Innovation? Political influence? A practical joke?