Final answer:
New Hampshire and Ohio were among the earliest states to formalize the role of real estate transaction agents during a time of intense land development and speculation in the United States.
Step-by-step explanation:
The practice of authorizing real estate transaction agents dates back to an era of significant land development and speculation in American history. In response to a real estate boom, certain states moved to formalize the role of such agents to manage the burgeoning real estate transactions. This process was not uniform across the United States, and individual states took their own initiatives.
Among the earliest states to recognize the work of real estate transaction agents were New Hampshire and states involved in the NorthWest Ordinances such as Ohio. New Hampshire, for instance, revised its constitution to manage the growing complexity of land transactions. The role of real estate agents became increasingly important as land ordinances established procedures for surveying and selling government lands. These developments reflected the high level of land speculation and the transformation of American life through entrepreneurial ventures and technological advancements during the 19th century.
The answer does not lie clearly in the provided references, requiring additional historical knowledge beyond the given information to determine the specific states and the timeline of their authorization of real estate transaction agents.