Final answer:
Millar's argued that the Assembly's power to legislate made the Roman Republic A. more democratic.
Step-by-step explanation:
Millar's argued that the Assembly's unique power to legislate made the Roman Republic: A. More democratic. B. Less democratic. C. Had no effect on the extent or amount of democracy in the Roman Republic. D. All of the above.
The Roman Republic had a mixed system of governance, with elements of democracy, aristocracy, and monarchy. The Assembly was the democratic element and had the power to pass laws. Therefore, Millar's argument would suggest that the Assembly's power made the Roman Republic A. more democratic.
This is supported by the fact that the Roman Republic had various assemblies, such as the Plebeian Assembly and the Centuriate Assembly, where citizens could elect officials and pass laws. These assemblies allowed for citizen participation and representation, which are essential elements of democracy.
Therefore, the answer is A. More democratic.