Keyword Analysis & Research: 1920

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What was life expectancy in 1920?

In 1920 an adult 60 years old could expect to live an average of 16 more years, to about 76. Today an adult 60 years old can expect to live 20 more years, to about 80. That is only a four-year difference that appears in the life expectancy figures.

What are the factors of 1920?

A composite number is a positive integer that has at least one positive divisor other than one or the number itself. In other words, a composite number is any integer greater than one that is not a prime number. The prime factorization of 1920 = 27•3•5. The prime factors of 1920 are 2, 3 and 5.

What inventions were invented in the 1920s?

Transcript of Technology and Inventions in the 1920's. It was invented by Henry Ford. The traffic signal was invented by Garrett A. Morgan. It was invented by John Harwood. This boom of inventions created a new America. Americans soon began using these, as well as many other, inventions such as frozen foods, band-aids, and Penicillin.


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