What made haman so angry with mordecai?

Haman was infuriated with Mordecai because Mordecai refused to bow down to him, despite Haman's high position as the king's advisor. This act of defiance not only insulted Haman personally but also challenged his authority. Additionally, upon learning that Mordecai was a Jew, Haman's anger intensified, leading him to plot against all the Jews in the Persian Empire. This animosity ultimately set the stage for the events of the Purim story in the Book of Esther.