Some great invention or event of the 20 century which we can argue for?

Question: Some great invention or event of the 20 century which we can argue for!?

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Best Answer - Chosen by Asker:

Micro-processors, the basis for modern computing, including the Internet

http://en!.wikipedia!.org/wiki/Microproces!.!.!.Www@QuestionHome@Com

Oral contraceptives, the medical development which has had the greatest social impact of any in the 20th century!.Www@QuestionHome@Com

Could you let me know what you mean with "which we can argue for!. please!?
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