Drakes folly discover which technological achievement?

Drake's Folly helped discover oil in a large scale, as it was the first oil well.

Explanation:

Edwin Laurentine "Colonel" Drake was an oil driller from the United States who is popularly credited with having "discovered" oil.

In 1859, a man told Drake that his machine to extract the oil would never work. Thus, on August 27, 1859, in a well that was built by Drake in Oil Creek, near Titusville, Pennsylvania, petroleum was found. Although oil was known prior to this fact, it was not available in large enough quantities to be useful.

Drake was the first to introduce iron pipes in the bore, so that he could drill deeper without the shaft closing due to the pressure of groundwater. He still used the method of impact drilling. Only in 1909 was the roller-chisel invented that made rotary drilling possible.

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