Answer:
historical context
Step-by-step explanation:
The date a source was created is considered part of its "HISTORICAL CONTEXT"
Historic context is a term that describes the things or factors that influence the story of an incidence or event.
Aside from social, political, cultural, economic, and environmental situations that influence the story account of events, another important part of a story or History, is the DATE a source of such event is created.
Hence, in this case, the correct answer is "HISTORICAL CONTEXT"