• Social factors - what was happening in society at the time? Was there a change in government? Were people starting to think a different way? How is change/mindset visible in your example?
• Cultural factors - how did people's everyday lives change? were children thinking/acting differently from their parents? Is this hinted at in your example?
• Economic/political factors - was there a change in how/what people were buying? Was there pressure from the government towards the public to act/think/behave a certain way? Does your example try to communicate this?

You could use a template like this one, but you could also create a custom-designed one to suit your needs.