Ester 10:1 King Ahasuerus imposed tribute throughout the empire, to its distant shores.
Tribute - taxes. Perhaps this came from the plunder of the enemies of the Jewish people.
During the millennial reign of Yeshua the people will have to go to Jerusalem every year or suffer the consequence of having no rain for the following year.
Zechariah 14:16-17 And it will come to pass, that every one that is left of all the nations which came against Jerusalem will even go up from year to year to worship the King, the L-RD of hosts, and to keep the feast of tabernacles. And it will be, that whosoever will not come up of all the families of the earth to Jerusalem to worship the King, the L-RD of hosts, even upon them will be no rain.
Ester 10:2 And all his acts of power and might, together with a full account of the greatness of Mordecai to which the king had raised him, are they not written in the book of the annals of the kings of Media and Persia?
Mordecai symbolizes Yeshua. A similar statement was recorded about Yeshua,
John 21:25 And there are also many other things which Yeshua did, the which, if they should be written every one, I suppose that even the world itself could not contain the books that should be written. Amen.
Ester 10:3 Mordecai the Jew was second in rank to King Ahasuerus, preeminent among the Jews, and held in high esteem by his many fellow Jews, because he worked for the good of his people and spoke up for the welfare of all the Jews.
Yosef was 2nd in command to the Egyptian Pharaoh. Daniel was second to Belshazzar, but 3rd in the kingdom because Belshazzar had a joint reign with his father.
Yeshua sits at the right hand of the Father and reigns with him.
The tenth letter is to correspond to the Tenth Chapter is Yod - Divine letter meaning hand - the right hand of G-d.
Tehillim (Psalms) 110:1 The L-RD (the Father) said unto my L-rd (Yeshua), Sit thou at my right hand, until I make thine enemies thy footstool.