Misc: What industry is symbolized by the term "madison avenue"?

Questions

Which was the first of the National Parks in England and Wales?

What was the philosophy of Jean Paul Sartre called?

Which number psalm begins, 'The Lord is my Shepherd I shall not want'?

The first Modern Olympics were held in Athens in 1896, where in 1900 were the second games held?

What is the decimal equivalent of binary 1111?