Bing found the following results
Bulgaria - Wikipedia
Bulgaria | History, Language, & Points of Interest | Britannica
Bulgaria Maps & Facts - World Atlas
Bulgaria - The World Factbook
Bulgaria travel - Lonely Planet | Europe
Bulgaria country profile - BBC News
Bulgaria - The World Factbook
Bulgaria - Simple English Wikipedia, the free encyclopedia
History of Bulgaria | Flag, Maps, Events, & Dates | Britannica
Bulgaria Travel Guide (Updated 2024) - Nomadic Matt's Travel Site