Which happened earlier: Bitcoin launched or United Kingdom decimalises currency?

Question 1

Which happened earlier?

A Bitcoin launched

B United Kingdom decimalises currency ✓ Earlier

United Kingdom decimalises currency (15 February 1971) came before Bitcoin launched (3 January 2009)

Question 2

Which happened earlier?

A Sony PlayStation released

B Game Boy released ✓ Earlier

Game Boy released (21 April 1989) came before Sony PlayStation released (3 December 1994)

Question 3

Which happened earlier?

A Panama Canal opens ✓ Earlier

B First Autobahn section opens

Panama Canal opens (15 August 1914) came before First Autobahn section opens (24 September 1921)

Earlier #172