ences ▁are ▁volunt arily ▁con ferred ▁to ▁Member ▁States . ▁The ▁confer ral ▁principle ▁also ▁guarante es ▁the ▁principle ▁of ▁proportional ity , ▁establish ing ▁that ▁the ▁European ▁Union ▁should ▁undert ake ▁only ▁the ▁minimum ▁necessary ▁actions . ▁ ▁The ▁principle ▁of ▁subs id iar ity ▁is ▁one ▁of ▁the ▁core ▁principles ▁of ▁the ▁European ▁law , ▁and ▁is ▁especially ▁important ▁to ▁the ▁European ▁inter g overn ment al ist ▁school ▁of ▁thought . ▁ ▁EU ▁recognition ▁of ▁the ▁principle ▁of ▁subs id iar ity ▁ ▁The ▁term ▁“ pr inci ple ▁of ▁subs id iar ity ” ▁was ▁not ▁referred ▁to ▁in ▁the ▁first ▁European ▁texts . ▁It ▁is ▁mentioned ▁for ▁the ▁first ▁time ▁in ▁ 1 9 9 2 ▁in ▁the ▁Tre aty ▁establish ing ▁the ▁European ▁Community ▁( TE C ) ▁as ▁am ended ▁by ▁the ▁Ma astr icht ▁Tre aty . ▁The ▁Article ▁ 3 b ▁states : “ In ▁areas ▁which ▁do ▁not ▁fall ▁within ▁its ▁exclusive ▁compet ence , ▁the ▁Community ▁shall ▁take ▁action ▁in ▁accord ance ▁with ▁the ▁principle ▁of ▁subs id iar ity ▁only ▁if ▁and ▁in ▁so ▁far ▁as ▁the ▁object ives ▁of ▁the ▁proposed ▁action ▁cannot ▁be ▁sufficiently ▁achieved ▁by ▁the ▁Member ▁States ▁and ▁can ▁therefore ▁by ▁reason ▁of ▁the ▁scale ▁or ▁effects ▁of ▁the ▁proposed ▁action ▁be ▁better ▁achieved ▁by ▁the ▁Community ” ▁▁ ▁The ▁Tre aty ▁on ▁the ▁European ▁Union ▁( TE U ), ▁also ▁written ▁in ▁ 1 9 9 2 , ▁states : ▁“ de cis ions ▁are ▁taken