Why was jhon quincy not an effective president

In 1912, the imperial system that had ruled over china for thousands of years

Which is likely the most serious problem associated with an epidemic? 1. there are sometimes no cures to the diseases that spread. 2. people often die from the diseases that spread. 3. there are usually no ways to prevent people from getting ill. 4. people often don’t know they have a disease.

How were the european systems of mercantilism and capitalism similar during the 18th and 19th century