A. It encouraged expansion by granting low-cost land to settlers
Answer:
Reign of Terror
Explanation:
If you rephrase the question like this "What was the rule of Maxiimilien Robespierre known as ?" it pops up as the reign of terror
The answer to your question I believe is negative.
B) Kelper: planetary orbits
Kelper had a similar theory of Copernicus
