Misc: cleithrophobia or cleisiophobia is the fear of ____?

Questions

who is the roman god of doors and gates?

what is the currency of costa rica?

who was the greek philosopher who correctly explained phases of the moon and eclipses of the sun and the moon?

who was the south america patriot who liberated bolivia, colombia, ecuador, peru, and venezuela from spanish rule?

to which influential italian family did the popes callistus iii and alexander vi belong to?