The original rock that has undergone metamorphism is called the protolith. Protolith can be any type of rock and sometimes the changes in texture and mineralogy are so dramatic that is difficult to distinguish what the protolith was. 1  Note that diagenesis and weathering are also a changes in form that occur in rocks.
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The Luddites were textile workers in Great Britain that resisted the changes brought about by the improving technology of the Industrial Revolution, including loss of jobs. The Industrial Revolution was a period of time in the early 19th century during which machinery began to replace hand production, water and steam power began to improve, and the factory system became implemented.