Name and describe one invention (or innovation) from the period between 1870 and 1980 that becam

Name and describe one invention (or innovation) from the period between 1870 and 1980 that becam

Name and describe one (1) invention (or innovation) from the period between 1870 and 1980 that became indispensable in the lives and the worldview of ordinary people all over the globe during this time frame, and explain why this is so. This is NOT an opinion question, and nor is it a personal one. You must weigh how an invention or innovation evolved to affect the lives of billions of people in the period between 1870 and 1980.

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