1989
They were first broadcast in 1802.
1951
Truman made his first White House TV speech in 1947 . Later speeches were also broadcast.
Television started to broadcast with satellite on March 1, 1978 and major television networks adopted this style of communications by year 1984.
In 1924, part of the Paris Olympics were broadcast.
1954 was the first Broadcast on Telivision of the world cup.
1956
1986
1995
It was first broadcast in 2003.
Live from the Met was first broadcast on PBS TV in 1977.
The broadcast of sound preceded the broadcast of television, therefore the first public television broadcast came with sound (not like the first films which were indeed silent).