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

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

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

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

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

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

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

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

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

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

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

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

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

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