Final answer:
The phrase about a dish and a spoon metaphorically represents communal sharing of land and resources according to First Nations philosophy, relevant to the history and social studies of southern Ontario.
Step-by-step explanation:
The phrase 'The Dish represents what is now southern Ontario. We all "share the land together, with only one spoon"' is a metaphor for the First Nations philosophy of sharing and coexisting on the land. The spoon symbolizes the idea that the land is like a dish with limited resources, and thus, we should share cooperatively, taking only what we need without depleting the resources, ensuring enough for everyone.
Referring to southern Ontario, this metaphor may have historical ties to treaties made with Indigenous peoples, embodying the spirit of communal responsibility and sustainability. The literature you encounter from courses in social studies often explores such metaphors to understand cultural perspectives and societal agreements.