Before you start searching Google or Library databases, you should clarify "what you really need to find". Ask yourself these questions:
If you are not sure about any of the above requirements, talk to your instructor.
Once you have a clear picture of what you need, you can then examine your assignment topic, break it down into small components (concepts and keywords) to make your search more efficient.
Read your research assignment or question carefully. This is your LANG 1002 assessment task:
An expository essay, in which you introduce a past game-changing idea and explain its impact.
Our imaginations often need a spark, something to get ideas flowing. Some of the sources listed below may help to "jump start" your thinking, to help you identify some game changers.
LANG 1002 instructors' suggestions - Start Points for the Second Assessed Writing Task