Answer: Historians consider the greatest achievement of the Byzantine Empire to be the preservation of Greek and Roman cultures Because Greek and Roman literature, arts, mathematics, engineering, etc. has been preserved by the Byzantine Empire, people were able to have access to the information and ideas that the Greeks and Romans produced which helps modern mathematicians and engineers to this day.
Explanation:
To My own understanding they explain nature as a free gift of life.
I think b is the correct answer upper quarter of states
The answer is the wagner act.
I hope this will help you :D