What European county’s explorers are depicted by this map?

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!

Ibelieve the answer would be a large-scale natural disaster 

Yeah, i guess that checks out because the unused brain is almost like a clean slate or a new car. it has more value than an older already used brain. -thomasnash