useless trivia: What Word Means: Okra?

Questions

Which country fought against Japan in the Battle of the Coral Sea?

Which "lady" was the most famous mistress of Wragley Hall?

What in 1781 became the first new planet to be discovered since ancient times?

What sport did Prussias Baron Gottfried von Cramm play at international level?

Who opened the almost immediately criticised M25 with the carp - I cannot stand those who carp and criticise?