The existence of reserve forces allows a nation to reduce its peacetime military expenditures while maintaining a force prepared for war.

He believed that the existence of goodness allows evil to exist, through the fault of humans.

The existence of a unifying concept allows us to be different in greater measure.

The continued existence of the private sector has allowed those with sufficient resources to avoid the worst aspects of the state system.

Conversely, she said, the existence of the home will open beds at the hospital and allow the staff to concentrate on children in more desperate condition.

The existence of a factional system allows its operations to be more predictable and stable.

She offers passion and good times, but such a carefree existence allows little thought for the future.

The existence of the automobile allows on-demand travel, given, of course, that the necessary infrastructure is in place.

The existence of fiber products of schemes allows one to make several constructions.

This owlish existence allowed him to work free of common interruptions.