Han (khan) Asparukh established first Bulgarian State with capital Pliska in 681 AD
Land of the Prabulgarian tribe (descent of Han Kubrat)
aristotle
In 1909 , Sorenson,a Danish biochemist,introduced the term PH.
Carl Linnaeus
bernard courtosis
who introduced environment
Garden of eastern Europe NB! Bulgaria geographically is in Southern Europe. Political term 'east European bloc' is a PAST TENSE since fall of Communism
Otto von Bismarck, the Chancellor of Germany, introduced the term "pension" as part of the social security system he implemented in the late 19th century.
A census.
Bulgaria became Bulgaria in the year 681.
Bulgaria in Spanish is Bulgaria, or Republica de Bulgaria.
The term "catalyst" was introduced by the Swedish chemist Jöns Jacob Berzelius in the early 19th century. He used this term to describe substances that accelerate chemical reactions without themselves being consumed in the reaction.