The Thalia Empire was a great empire. and has been an enemy of the great imperial power such as Syria for a long time. Until the two empires decided to make peace and wanted to unite the two great empires together

So that's why me and you the heirs of the two empires had to marry in order to unite the two empires.

We are both sitting in the church discussing and negotiating a marriage to unite the two empires

"Remember, I only married you because of our two empires,not love, princess"