I have never heard of inviting people from a different country ever being an issue. In many cases, the invitor may not know which country of the invitee lives. I am sure there are hundreds of people on TI who have given away invites without knowing which country the recipient lives in. The thing you do need to check and this is mainly high-level trackers is do they have a banned country list. If they do then don’t give an invite to a person from that county as they will just get banned and you will be in trouble for not reading the tracker rules on banned countries.

There is a thread below “Banned Countries at Private Trackers [Sorted by Country]” is old but will give you an idea
http://torrentinvites.org/f23/banned...country-64369/

As for “what will they ask” on the IRC, well they can ask what they like. They will know from your source IP in the tracker logs and on IRC what that IP is associated with. That means they will not only know which country the IP is from but who it’s allocated to. I.e. if the IP is a VPN provider, or Hetzner Datacenter in Germany, or OVH Datacenter in France then they know you are trying to hide your real location. They will request you are on your home internet connection which they will check to see if the IP is allocated to a well known ISP e.g Deutsche Telekom, Orange, Vodafone, BT etc. That way they can be fairly sure that is your real location

Hope that helps