Final answer:
Andrew Jackson's implementation of the spoils system justified the opinion of the cartoon.
Step-by-step explanation:
One action by Jackson that would have justified the opinion of the cartoon is his implementation of the spoils system.
The spoils system was a practice where Jackson rewarded his supporters with government positions and removed those who were loyal to his opponents. This action was seen as corrupt and a form of patronage, in which individuals were given positions based on political connections rather than merit.
An example of this was when Jackson replaced many government officials with his own supporters, leading to accusations of corruption and nepotism.