After all, it's the only federation in the world that unites a whole continent.

Another theory, supersymmetry, unites the building blocks - the quarks and the leptons - with the force carriers.

As such, it is the critical aspect of making art, the linchpin that unites theory with practice and conjoins the intellect and the hand.

By the time order was restored, it was clear that the whole family were united in boredom.

Clearly, reading, as well as revolution, is the intertextual glue that unites these three novels.