This week in history #51

Last week's photos:
1901 Marconi
1991 Korea
1911 Amundsen
1962 Mariner II

Last year we looked at obscure holidays. This year, let’s look at major world events that occurred each week.  Make your best guess in the comments as to the years of each event.  No googling!

Week #51

December 21, ____ - Anesthesia was used for the first time in Britain. 

December 21, ____ - East and West Germany established diplomatic ties, ending two decades of Cold War hostility. 

December 21, ____ - The KGB (Soviet Secret Police) was abolished by Russian President Boris Yeltsin. 

December 23, ____ - The transistor was invented at Bell Laboratories, sparking a worldwide revolution in electronics.