to gather; to assemble · (math.) set

Everyone gathered together in the open space to meet.

The spatulas, ramekins, plates, and mugs are all from the collection.

The function f vanishes on the set X.

The teacher assembled the students in the hall.

It's the answer spoken by young and old, rich and poor, Democrat and Republican, black, white, Hispanic, Asian, Native American, gay, straight, disabled and not disabled. Americans who sent a message to the world that we have never been just a collection of individuals or a collection of red states and blue states. We are, and always will be, the United States of America.