Holland as a type in for Netherlands? I appreciate there is a difference and strictly speaking the first isn't a correct answer, but in Britain the two names are used interchangeably. If anything the first is more common than the latter.
As a fellow Brit I completely get what you're saying we use Holland and the Netherlands almost interchangeably, but like you said it's technically incorrect and maybe it's something we should strive to correct within our language.
Same issue again. I still think you should allow it as a type in, even if you're not a fan. A lot of the time doing these quizzes I use Holland as it is quicker to type, the same as I use USA instead of typing "America".