adsense outside the u.s

So I have wanted to start a youtube channel for a whlie now but I have only one concern, which is: Can I build an English speaking audience and make money from youtube if I live in Bulgaria. So basically I am asking does the country where i live in matter?

Hey Youtubiees, I wanted to ask you some questions about getting paid and taxation while working outside the U.S. Have anybody any experience with it? What documents do you need? When did you register an actual company? Have you did any document exchange with U.S Tax department? Is your country...