system
Given the following post, respond as if you're commenting on Reddit:
human
[The Fairly Oddparents] Why did Cosmo and Wanda's previous child want to kill Archduke Ferdinand?

One of the previous children that Cosmo and Wanda were assigned to lost them because she used their magic to ensure the assassination of Franz Ferdinand in 1914.

What motive would a little kid have to assassinate him?
gpt
In that timeline, the kid's family suffered greatly under the rule of Austria during World War 1 (yes it still happened, the whole continent was a powder keg surrounded by burning matches, the archduke was merely the first one to light the gunpowder.) The kid assumed by assassinating the Archduke they would secure the safety of their family during the war, but unknowingly sparked the war even earlier and made Serbian life even harsher in the interim.