Examlex
Which of the following had occurred by June 1861?
Usefulness
The quality of being able to provide a beneficial function or meet a need.
Innovation
The process of introducing new ideas, devices, or methods to offer better solutions that meet new requirements or existing market needs.
Invention
The creation of a new device, method, or process, resulting from study and experimentation.
Difference
The quality or condition of being unlike or dissimilar.
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