It would be excellent if there is an option in the site / forum to look for participants by country.
I live and work in Bulgaria. And it is practically impossible to figure out how many other Bulgarians enjoy Backdrop or are interested in this CMS.
I'm searching periodically. And yesterday I came across this interesting link:
That's indicative! I don't find many hosting providers to offer dedicated hosting for Backdrop. This is a Bulgarian hosting provider with offices in several major other countries, including Europe and USA.
So this serious investor has considered that there is a potential to offer Backdrop hosting in Bulgaria. He's made a decision about it recently. I am convinced of this potential from the very beginning of Backdrop.
But I do not know other Bulgarians who are interested and work with Backdrop. If there are - they will almost certainly be registered in the forum.
Just make such that I can find them and jointly possibly we will organize a celebration of global Backdrop Birthday Party on Jan 15th, 2019 in Bulgaria.