whats the difference...

what is the difference in combat arms and combat arms Europe isnt it like the same thing...
(sorry im new at playing CA)

Hackshield version of CAEU updates more often. And I think US version uses other presets, that's why you can't use No Recoil or No Spread hacks from US on EU.
Correct me when I'm wrong.

Its the same. Only CA patches comes faster then CA EU

ehm no , BIG updates comes faster on CA , but CAeu update the hackshield more often Go Nexon!

Then Explain me why several hacks don't work on CAEU

I think because of the addresses/strings (whatever the name is lol)...im no coder but thats what I "heard".

i think that USA is a test or something.... USA testes Quarantine and if it s u x then they makes an new version of Quarantine and Tests that in EU ^^ AND in USA u can hack MUCH better