Final answer:
During the 1700s, someone who supported change in government would be described as a reformer or an advocate for political change.
Step-by-step explanation:
During the 1700s, someone who supported change in government would be described as a reformer or an advocate for political change. This was a time of significant political transformation, with movements such as the American Revolution and the French Revolution challenging the traditional monarchical power structure. For example, in France, critics of absolute monarchy and aristocratic privilege agitated for change. In the American colonies, those who opposed monarchy and sought a new government based on republican ideals were referred to as republicans. These politically descriptive terms highlight the desire for change and new forms of government.