Film Stats & Assorted queries

[Bipolar]

Curious... which was the first film to have scenes filmed abroad (i.e. outside India)?

Also curious - which was/were the first film(s) to have scenes filmed in Europe?

Also - any specific reason why - in the late 1990's - they started a trend of filming (especially songs) in Switzerland? I'm assuming it started to become cheaper around that time?

Just curious...