Which part of Babylon was known as one of the Seven Wonders of the Ancient World? * kings palace
wall around the city
irrigation system
Hanging Gardens

Hanging Gardens of Babylon

Explanation:

Hanging Gardens of Babylon, ancient gardens considered one of the Seven Wonders of the World and thought to have been located near the royal palace in Babylon. By the beginning of the 21st century, the site of the Hanging Gardens had not yet been conclusively established.

a is correct

hope this let me know if it is right

monarchy doesn’t have to have the hereditary element. there have been elective monarchies in the past where you choose your king-for-life and when he dies elect someone else for the job.