What percent of families on the TV set by the end of the 1950s

By 1957, Americans were able to watch 450 stations across the U.S. on 37 million TV sets; by 1960, nearly 90% of households had a TV.

2.On 11 December 1941, four days after the Japanese attack on Pearl Harbor and the United States declaration of war against the Japanese Empire, Nazi Germany declared war against the United States, in response to what was claimed to be a series of provocations by the United States government when the U.S.