Which happened earlier: Sonic the Hedgehog released or Charles de Gaulle Airport opens?

Question 1

Which happened earlier?

A Sonic the Hedgehog released

B Charles de Gaulle Airport opens ✓ Earlier

Charles de Gaulle Airport opens (1 January 1974) came before Sonic the Hedgehog released (23 June 1991)

Question 2

Which happened earlier?

A First three-colour traffic signal introduced ✓ Earlier

B Gucci founded

First three-colour traffic signal introduced (1 January 1919) came before Gucci founded (1 January 1921)

Question 3

Which happened earlier?

A Guggenheim Museum New York opens

B DNA double helix structure published ✓ Earlier

DNA double helix structure published (25 April 1953) came before Guggenheim Museum New York opens (21 October 1959)

Earlier #211