U got akatosh blessing allessia with being dragonborn because shes head of an empire.
Akatosh gives allessia the amulet of kings saying rulers over all men will get to get akatosh blessing by wearing the amulet if their ruler over all people and in doinb so perform the rites and get akatosh blessing.
Remen was a dragonborn.
Tiber Septim was a dragonborn who eventually afyer a dragonbreak became a "God".
The septim rulers because they were rulers over an empire got to wear the amulet and in doing so perform the rituals and get the blessing of akatosh.
Martin who was heir to the empire and camoran who was heir to the ayleid empire both worn the amulet of kings at the time an empire had no ruler bit could be considered it having 2 at the same gime fighting for who would be imcharge of it.
Martin eventually takes on the aspect of akatosh to beat back mehrunes.
Like to point out that allessia, remen, and Tiber built their empire from the ground up and were dragonborn whereas medes empire didnt have a dragonborn but also their empire was basically taking over the septim empire. They didnt build it from the ground up and strangly wasnt dragonborn.
What exactly is akatosh deal with empires? What so important about empires and creating and maintaining them that akatosh gives kts blessing for it?