Misc: what yankee yanked his 500th homer over the wall on may 14, 1967??

Questions

What building material was extensively used by the romans and then forgotton until the 18th century?

Which organisation was founded by William Booth?

What board game is known as The Game of four Winds?

What did Mr Bojangles do to amuse his cell mates?

Who established horse power as a unit of measurement?