Finland: Rotten Sound, Impaled Nazarene
Sweden: Marduk, Meshuggah
Norway: Carpathian Forest, Immortal
Denmark: Cataract, Graveland
Russia: Butterfly Temple
France: Blunt Aus Nord
Germany: Necrophagist, Heaven Shall Burn
Belgium: Leng Tch'e, Lugubrum
Israel: Rabies Caste
Poland: Behemoth, Vader
The UK: Gorerotted, Napalm Death
Australia: Halo, The Berzerker
Japan: Susumu Hirasawa, that guy who did the Silent Hill 2 OST (someone help me out here? )
Brazil: Sepultura
USA: Pig Destroyer, Pelican
Canada: Cryptopsy, Our Lady Peace
Greece: Rotting Flesh
And to Burnipating Pesci, Aqua are from Sweden.