Aegeus' nephews killed Androgeos because they were afraid he would provoke an attack on their city. That plan did not go as expected.
Androgeos' death was sparked by fears that he was planning an attack on Athens, where Aegeus was king. However, this plan did not go as planned, as King Minos started a war against Athens as revenge.
Furthermore, he asked the gods to punish Athens for the death of his son. This request was granted, which caused Athens to go through periods of misery.
You can learn more about King Minos at the link below:
https://brainly.com/question/16774364