<span>Assuming that this is referring to the same cartoon that was posted before with this question, its purpose is to "</span>support nativist anti-immigration sentiment" since it paints immigrants in a bad light.
By the early 1900s, Germany had worsening relations with all of the following except "Austria-Hungary", since a wave of nationalism in Germany gave them the impression that Austria-Hungary was really a part of Germany anyway.
They had kept greek n roman culture alive for a 1,000 years after the fall of the roman empire in the west. which had preserved this cultural legacy until it was taken up in the west during the renaissance.
They created a democracy untainted by wealth, privileged birth or corruption where every (eligible) citizen can take part in politics/ assembly.
opinion
you can't prove that pigs don't make good pets, its totally subjective