Because of geography and nature, bio-diversity, difference in tradition and culture, economic difference etc etc.
The region is it has great farmland. : )
bg
union makes the power
If you mean what is bulgarians religion. They are Christians.
box by Kubrat Pulev
around 7 million
Most people around the world live in urban areas or cities, a trend known as urbanization. However, there are still significant populations living in rural or countryside areas, particularly in agricultural regions. The distribution of people between cities and countryside can vary by country and region.
Around 7 300 000 people
mommy
suburb,countryside
Bulgaria's name comes from the Bulgars, a semi-nomadic Turkic people who settled in the region in the 7th century. The name is derived from the Bulgar language, which means "mixed."
Until 1989, Bulgaria was a communist state.