Misc: Who is Gog's companion in London's Guild Hall?

Questions

how many litres of maple sysup were produced in canada in 1990??

what north american grazer does the chamois resemble??

what were the names of the ghosts in the series topper??

1992 - what italian tower got steel girdles to keep it from falling in may?

what soviet leader was temporarily deposed by coup in 1991??