Misc: [pot luck] in what us state is 'mammoth cave'the longest cave in the world?

Questions

What was steven spielberg's first film?

What was the #8 movie (1988) to the end of 1988 with 109 million dollars gross?

What was the (West) German capital before the 'Wiedervereinigung'?

What was the beatles' second film?

What was the best chariot route from rome to brindisi?