I need one single word that is synonymous to "bold display of power/might/hold/domination in some place" .It would be much appreciated if someone can provide me a noun otherwise a verb will also do it.
You could consider:
Pretentious display meant to impress others; pretentious showiness.
Archaic The act or an instance of showing; an exhibition.
A public performance or display, especially one on a large or lavish scale.
vaunted display of courage or self-confidence; swagger
Depending on context, consider:
An ostentatious show; an exhibition AHD
A play made with special brilliance and brio, esp in order to impress the spectators.
Any action, speech, tactic, etc, designed to appeal to spectators; a tour de force : The President's pronouncement's just a grandstand play(1888+ Baseball) The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, PhD.