In case you are wondering, The Republic of Bulgaria is located right here:
Now for a little bit of Bulgarian culture, brought to you by Rick Steves:
For more information about adopting from Bulgaria, visit the Department of State's Website on Intracountry Adoption.
The following adoption agencies have Bulgaria adoption programs. (There may be other agencies with programs, these are just the ones of which I am aware. I am not endorsing any of these agencies. Please do your own research, ask for references, etc.)