The impacts of large asteroids on earth are inferred to be associated with
1) free oxygen entering earth's atmosphere
2) seafloor spreading
3) the creation of subduction zones
4) global climatic changes

Global climatic changes , I believe. Good luck 

Can you give us more information about this question and i will try to you as much as i can

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!