Final answer:
Zero mileage typically begins at the south and west state boundaries in road mile marker systems used in the United States.
Step-by-step explanation:
The question 'Zero mileage begins at which state boundaries?' likely pertains to a system of measuring distances within a state or country, often used for navigation or road mile markers. In the United States, road mile markers typically begin at the south and west state boundaries. Hence, the answer would be: Zero mileage begins at the south and west state boundaries.
Union States are to the north, Confederate States are to the south, and border states are in between. While these historical demarcations don't directly correlate to the modern system of zero mileage points, the concept of geographical orientation and navigation remain essential in both contexts.
More broadly, when understanding geography and navigation, it's important to consider the diverse ways different regions, such as the Rust Belt or Sun Belt, may define their spaces and boundaries, often based on perception as opposed to formal criteria. However, for more formalized systems such as state boundaries and road measurements, specific starting points like the south and west boundaries are typically utilized.