How did al-Rāzī contribute to new medical treatments? He taught medicine at a medical school in Baghdad.
He proved Greek and Indian physicians wrong about diseases.
He wrote about how to treat diseases like smallpox and measles.
He was the author of an important book called The Canon of Medicine.

He wrote about how to treat diseases like smallpox and measles.

Explanation:

al-Razi book on smallpox and measles was not the earliest monograph on the subject . Al-Razi's treatise on smallpox and measles was, however, the more influential and was twice translated into Latin in the 18th century.

what are local authorities doing to fix the problem

explanation:

what are local authorities doing to fix the problem

the answer is suffrage