Final answer:
The town of Dawson originated through 3) the sale of coal rights and the development of land. Canals played a role in transporting coal, which likely contributed to its origin.
Step-by-step explanation:
The town of Dawson originated through 3) the sale of coal rights and the setting aside of land for the town's development.
In the late 1820s, there was a canal-building boom, and canals were used to transport coal from fields to cities. This likely contributed to the origin of Dawson.
Additionally, the transportation revolution in the mid-19th century, which led to the development of railroads and canals, stimulated the demand for coal, iron, and steel industries. This may have further supported the growth and establishment of the town.