HELP Wanted!!!

Hello... I want someone, who knows, to answer my question :)... I will give cookies and xoxoxoxoxoxo to who ever helps me :D...

My question:

I live in Romania, who is a member of the EU... if someone from US (or another place in the world) buys a key for Command and Conquer Ultimate Collection, can the key be redeemed by me? So, a key for the game bought in US (or another place in the world), on amazon.com, or another shop in the US (or any place in the world), can the key be redeemed by me, a player from the EU?

I ask this, because of the difference in pricing from region to region... so, I am interested if the key for the game is not region locked, and can be activated on my origin account :)...

EDIT: I am referring to this situation: Someone buys from another place than Romania/EU the game/key, and then gives me the key... is the key region locked or not? Would I lose the games, after I activate them, because someone else sent them to me? Buying the key at, let's say, half the normal price here (30 euros)? I heard about EA wanting to make a gift system like steam, but with heavy region locking... like, you can only send give to those in your country, or countries who also use your currency system...

Thanks in advance...