what are two of the most prominent 20th century inventions that have advanced the development and accuracy of modern maps.

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Salutations!

What are two of the most prominent 20th century inventions that have advanced the development and accuracy of modern maps.

The two of the most prominent 20th century inventions that have advanced the development and accuracy of modern maps are computers and satellites. The results of modern maps of computers and satellites are very precise and accurate. 

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