What is the amount of the shortage or surplus in the market for public transportation when the price ceiling is $1.75? 
Definitions:
Food Foragers
People or groups who subsist by hunting, fishing, and gathering wild plants and fungi, rather than cultivating crops or domesticating animals.
Incidences of Warfare
Occurrences or instances of armed conflict between groups, emphasizing the frequency and distribution of such events over time or space.
Frequent Mobility
The tendency or need to move often, either in short distances within a local area or longer migrations, found in nomadic or certain modern lifestyles.
Chiefdom
A politically organized society in which several neighboring communities inhabiting a territory are united under a single ruler, who is at the head of a ranked hierarchy of people.
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