Yes, Angry Birds is available on PSN in a PS Vita compatible form.
Nope!
They are currently working on getting Angry Birds on PS vita, as I have stated in a few other articles, they are only concepts, but they are currently trying to make angry birds in 3d and add other popular video game characters to the series. Such as the transformers, spongebob, pokemon, etc See the related link for more information.
No you can not play the PS Vita games on a PSP.
Yes, the PS Vita's games are region free. A Japanese PS Vita will play an EU game.
You should buy a PS Vita if you want to play PS Vita games.
No it can not. The PS Vita can not play the Black Ops game. The PS Vita plays PSP and PS vita games not PS3 games
No because Call of Duty Black Ops does not have a PSP or PS vita game version. You will not be able to play any PS3 games on the PS Vita
A PS Vita is a physical thing, a game console, it can't be downloaded. No Android device is powerful enough to play a PS Vita game.
Yes
No you can not
You can play Five Nights at Freddy's in a PS Vita, PS3 or a PS4. You will just have to buy the game first.
There is an increasing selection of PS games, 'PSOne Classics' available on the PSN, the PS Vita has an emulation mode to play them on. Also, there are some that aren't available on the PS Vita's PSN store but are on the PS3's, which can be transferred across to the Vita via the PS3.