The text claims bloodletting is a good treatment for the plague and cured some cases. This an example of a surprising claim that was proven to be accurate. the need to check facts before publishing a book. an error that was corrected with new evidence. the changing standards in textbook publishing.

an error that was corrected with new evidence.

Explanation:

Bloodletting is the surgical removal of blood from a patient to cure illness, disease, and therapeutic purposes including hemochromatosis, etc.

The text claims bloodletting is a good treatment for the plague and cured some cases. This an example of an error that was corrected with new evidence.

not sure but thinking i'ts cause the government was broke. not sure