No, the use of capitals is wrong, the infinitive verb is split (you can't "to slowly", it is not a verb) and a comma is needed. The correct version is below. These newcomers began slowly to drive out the native Britons and by AD 600, they occupied nearly all of England.
The sentence is gramatically correct.
No 'It's for you' would be though
No because and is a fanboy and it would not be gramatically correct
You take the word, and put it in a gramatically correct sentence. :) *HEY NATALIE ;) FROM: BANANA*
Yes, but it depends on which context it's used in.
my big fat mama
This sentence is gramatically incorrect!
I don't see why not although beginning a sentence with 'or' is unusual.
No. That phrase doesn't have a verb.
It's a weird sentence, but it is grammatically correct.
No. I would say: "You and her will begin to ship the product".
I believe my offices and I are well known.