Ar gyfer eich diogelwch eich hun.
(You can miss out the last two words: Ar gyfer eich diogelwch - For your safety)
"You are Welsh" = Rwyt ti'n Gymreig
'Our Friends' in Welsh is 'Ffrindiau Ni' :)
To say "your house" in Welsh, you would say "eich tŷ".
Cymraeg
No in Welsh is dim.
"y diwedd" is how you say it in Welsh language.
In Welsh, you would say "Rwy'n cytuno" to say "I agree."
Draig Gymreig
You can say "it's nice" in Welsh as "mae'n braf."
Wales is a country. It has it's own language and its own elections for welsh ministers. So yes, I would say Wales is significant!
Great > [Welsh] mawr
"Egg" in Welsh is "wy".