Ask HN: Should I launch in my local city or abroad?

I have an app with a target market. I can launch in my local city, which isn't really known for startups, has a very small market. Or I can launch abroad and fly there for a 1-2 months and try to launch it there. Launching abroad has a much larger market size, but I don't know anyone there.

Should I simply try to launch in my local city and see if my business model works first?