Since Mordecai didn’t bow down (or worship) before Haman, Haman decided to destroy him with the rest of the Jews.
– The Jews and Christians are only aloud to worship One and Only God, that is why Mordecai didn’t worship Haman. Mordecai would become unfaithful to God.
King Ahasuerus granted Haman the permission to do anything he wants to with all of the Jews.
The letters with the cruel law got distributed throughout all of the Ahasuerus’ land.