Question 1
Which happened earlier?
A
KDKA first commercial radio broadcast
✓ Earlier
B
BBC first radio broadcast
KDKA first commercial radio broadcast (2 November 1920)
came before
BBC first radio broadcast (14 November 1922)
Question 2
Which happened earlier?
A
Voice of America first broadcast
B
Radio Luxembourg begins regular broadcasting
✓ Earlier
Radio Luxembourg begins regular broadcasting (15 March 1933)
came before
Voice of America first broadcast (24 February 1942)