UnScramble this Word: h m p r e t u?

Questions

Who, in 1957, was the first-black player to win a singles title at Wimbledon?

Which World Champion heavyweight boxer held the title for the longest?

Which country became the second to issue postage stamps in 1843?

Which author wrote the "Redwall" series of novels?

"All human life is there" - a quotation from Henry James - was used to promote which British Sunday newspaper in the 1950s?