<span>Disposable razor blades were invented in 1901 by Gillette.
Gillette is a company based in the United States, founded by King C. Gillette in 1901. He was an American businessman who saw the need for disposable razor blades, which is why he is considered the pioneer in the business.
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I believe the answer is: <span>gender typing
During </span><span>gender typing, children would started to develop awareness on what gender they really are and started so seek information on how to act/behave from other poeple with similar gender characteristics. During this time, they would start to adopt </span><span>proper "masculine" and "feminine" behaviors that accepted by society.</span>
