The angel continues speaking to Daniel.

## one of his commanders will become stronger than he and will rule an even greater kingdom ##

A commander of the king of the South will become the king of the North.

## they will make an alliance ##

The king of the South will make an alliance with the king of the North. This alliance would be a formal agreement that both nations are required to follow. AT: "the king of the South and the king of the North will promise to work together."

## The daughter of the king of the South will come...to confirm the agreement ##

The king of the South will give his daughter in marriage the king of the North. The marriage will confirm the agreement between the two kings.

## she will be abandoned ##

AT: "they will abandon her." This appears to refer to a plot to kill her and those who made  the alliance. (See: [[rc://en/ta/man/translate/figs-activepassive]])