Measures taken by a state or a bloc of states to monitor its borders and regulate the movement of people, animals, and goods across the border.

Less of something is not necessarily more appropriate or optimal.

simple past tense of grin and bear it

past participle of grin and bear it

To acquire something by any means necessary or available.

As though born a twin or twins

(quantum mechanics) A key postulate of quantum mechanics, giving the probability that a measurement of a quantum system will yield a given result. In its simplest form, it states that the probability density of finding a particle at a given point, when measured, is proportional to the square of the magnitude of the particle's wavefunction at that point.

(telecommunications) Acronym of battery feed, overvoltage protection, ringing, signalling, coding, hybrid, test. (the set of functions performed by a subscriber line interface circuit (SLIC) in the line card of a telecommunication system providing plain old telephone service)

In the American Civil War, one of the slave states that did not join the Confederacy.

Troides andromache, a species of Bornean birdwing butterfly.