A) 7 March 1974
B) 15 August 1975
C) 22 December 1972
D) 1 January 1970

A) Twenty
B) Fifteen
C) Seven
D) Ten

A) 1983
B) 1979
C) 2017
D) 1985

A) Madara Rider
B) Boyana Church
C) Rila Monastery
D) Thracian Tomb of Kazanlak

A) Ancient and Primeval Beech Forests of the Carpathians and Other Regions of Europe
B) Thracian Tomb of Kazanlak
C) Rock-hewn Churches of Ivanovo
D) Madara Rider

A) Three
B) Four
C) Seven
D) Ten

A) 1983
B) 2017
C) 1985
D) 1979

A) To establish national parks
B) To recognize sites of outstanding universal value to cultural or natural heritage
C) To promote tourism
D) To fund archaeological digs

A) Cultural
B) Transnational
C) Natural
D) Mixed

A) Sixteen
B) Twenty
C) Fifteen
D) Ten

A) Natural features
B) Monuments
C) Architectural works
D) Inscriptions

A) 2017
B) 1983
C) 1985
D) 1979

A) At least one of the ten UNESCO criteria
B) A minimum of 100 years of existence
C) Approval from all neighboring countries
D) A recommendation from the European Union

A) Habitats of threatened species
B) Inscriptions
C) Monumental sculptures
D) Architectural works