It happened in 1790 so the it would be either a or b but what do you mean by turn of
<span>the spread of television ownership to most American households</span>
Olayinka Herbert Samuel Heelas Badmus Macaulay (14 November 1864 – 7 May 1946) was a Nigerian nationalist, politician, surveyor, engineer, architect, journalist, and musician and is considered by many Nigerians as the founder of Nigerian nationalism.
He called the imaginary barrier the "Iron Curtain". He used this image to oppose the Soviet union expansion, and keep in communism in check.
Hope this helps!!!:)
