"No wonder they all see it as the potential for galactic domination."

Aggressive, intelligent species bent on galactic domination.

But the Shepherds offered quadrant, if not galactic, domination, and that was a tidbit worth shutting one's mouth to take.

Was it these aliens, and did they have some strange agenda of galactic domination?

He has no doubt come to try and stop my plan for total galactic domination.

Despite setbacks, the entities were on the verge of total success, of galactic domination.

As raiders of natural resources, the aliens are bent on galactic domination.

"Oh, galactic domination," she said in her most irreverent tone of voice.

But what did she, who had been rescued from a collective with the capacity for total galactic domination, know?

The most difficult method is galactic domination where you must completely subjugate all other races in the galaxy.