Our purpose in Vietnam is to prevent the success of aggression. It is not conquest, it is not empire, it is not foreign bases, it is not domination. It is, simply put, just to prevent the forceful conquest of South Vietnam by North Vietnam. ↗
In fiction, too, after the death of Cooper the main tendency for nearly a generation was away from the conquest of new borders to the closer cultivation, east of the Mississippi, of ground already marked. ↗
In the last five or six thousand years, empires one after another have arisen, waxed powerful by wars of conquest, and fallen by internal revolution or attack from without. ↗