What is referred to by 'arthurs school terms'?

Based on the clue 'arthurs death shatters peace in the 3 realms a ne...', what is the answer? What is referred to by 'arthurs fools'? What is referred to by 'arthurs purest knight'? Based on the clue 'arthurs round table had a seat reserved for this k...', what is the answer? Based on the clue 'artichoke hearts or spinach this crumbly greek ch...', what is the answer? Based on the clue 'article 1 gave state legislatures the power to ele...', what is the answer? Based on the clue 'article 1 of un charter says maintaining this is t...', what is the answer? Based on the clue 'article 1 section 3 states that this person shall ...', what is the answer?