How were each of these mountains form?

The Catskills began existence as a river delta 350 million years ago. Streams flowing off the then-mighty Acadian Mountains deposited sediment where the river met a sea (now the Allegheny Plateau). Eventually the Taconics eroded to their present size and the waters dried up, leaving a mostly flat plain.

Answer light in color; silica-rich;

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!