Discover and Invent
Incorrect: Columbus invented America in 1492.
Correct : Columbus discovered America in 1492.
Incorrect : Who discovered computer?
Correct: Who invented computer?
Note: You discover something that existed before but was not known, such as a place or a fact. You can also say:
We soon discovered the truth.
But you invent something that did not exist before, such as a machine or a method.
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