<span>the 1920 was not a conservative era, It could be the considered the first era of Sex, Drugs, and Rock and roll, after all skirts got shorter, at that time women didn't even show there ankles, and suddenly the dress length was just below the knee, prohibition was law in the USA, so people drank in seedy places called speakeasies, and Jazz was the music of the times. We may think it was conservative but if you had lived at the time it was not, it was a radical time to live.</span><span />
Sir Fergus Graham Burtholme Millar FBA is a British historian and Camden Professor of Ancient History Emeritus, Oxford University. Millar numbers among the most influential ancient historians of the 20th century.
<span>It established the idea of "Separate, but equal.</span>
The Answer Is:
(A.) "Their success encouraged people to experiment and invent new products"