Answer:
This source shows the triggering of the Alliance Systems. It shows Austria-Hungary threatening Serbia with Serbia being defended by Russia, and Germany coming to the aid of Austria-Hungary. France and Britain appear weak in this Political Cartoonas they are not in uniform and are far behind. This is mocking Britain and France. Serbia is small to represent how Austria-Hungary viewed the Serbs (Slavs) as inferior and sub-human. They also viewed their military as weak and the child form of Serbia used shows this. Austria-Hungary and Germany appear well equipped in uniform and ready for war.
Step-by-step explanation:
NOTE:
Link Austria-Hungary's threatening gesture to the July Crisis/Ultimatum
Link the child form of Serbia to Serbia wanting independence from the Austria-Hungarian Empire.