site.btaObservances: March 16

On this date in Bulgarian history:

1923: Protocol signed with Inter-Allied Commission to relax war reparations imposed on Bulgaria under 1919 Treaty of Neuilly.
 
1936: Statutory Ordinance on Protection of Nature is gazetted, pioneering Bulgarian nature conservation and environmental protection legislation.

1972: Residents of Baroutin Village in Rhodope Mountains stage peaceful protest against forcible renaming of Bulgarian Muslims. Army and police units disperse protesters.

1978: Balkan Bulgarian Airlines Tu-134 on scheduled flight from Sofia to Warsaw crashes near Vratsa (Northwestern Bulgaria). All 73 people on board, including 39 Poles, 27 Bulgarians and 7 crew, are killed.