What are the lines that spread out from one of earth’s poles and curve around the planet to return to the other pole? what do they represent?

I believe you are describing lines of longitude, which represent a given location in either the western or eastern hemisphere, and allow distance to be measure over very long distances.

What type of link is

Europe needs to build a trump-like wall that will spread across europe making it impossible for migrants to cross they need to spread pig guts all over this wall so the muslims will never consider crossing into europe..you might be asking "can't they just fly over with planes? " well yes they can so we will install thaad missile protections system to shoot down any aircraft that violates europe's air fourth would be to start a fourth reich in germany.. last but not least.. make europe great again!