This is THE FIRST what Bulgarian people does for Europe. The details : In 8 century A.D. Europe was threatened from Arabians. Bulgarian ruler- khan Tervel helped Bizantium empire against Arabians and his help turned out decisive one for saving the continent.
But didn't the Volga Bulgars convert to Islam at this time? So how can you say the helped the Byzantine against the Arabs? The did help against the Mongol invasion, though, as they were the first to defeat Khan and the Mongols.LINK
If Bulgaria has been there since the time of the Pharoahs where then did the Ancient Thracians live?
Bulgaria has not been where the Pharoahs where. Bulgarians came to Europe from Asia. But the first their nativeland is Balkan penincula where they lived togather with the thracians. This is the old nativeland of Indo-Europeans.10000 - 8000 years B.C. there was a big flood and then was created Black sea. Thracians remained on the Balkan penincula, but Bulgarians went out and entered in Asia. Where they had a interaction with the ancient eastern civillisations. In the begining of A.D. they were again in Europe and in the early middle centuries created their great states in Europe and saved the continent. The Thracians were assimilated from Roman Empire, when Bulgarians came to Europe. Now there are only remainders from them. Today their names are "karakachani","Vlasi" and ets.But our topic is Bulgarian people and what they did for Europe in early middle centuries. The Thracians are other them.