sentence1: Here's what they've forgotten--Rembrandt, van Gogh, Spinoza, hydraulic engineering, silver skates, Boswell's education, (I was sure there'd be many a smartass remark about his law school days), treat, courage, uncle, rub, elm disease, those damned Spanish Hapsburgs, that crazy Protestant Reformation (the long hair, the beads, the--oh, wait, Woodstock again), the seizure of Sumatra, the wars with England and their possible connection to the death of Christopher Marlowe (who never got to see Gwyneth Paltrow naked, but might have if only he and she had been at Woodstock), and the nation's new maturity in 1952 when it took its place among other great nations as a member of the European Coal and Steel Commission.
sentence2: The nation's new maturity in 1952.