Technological changes to art during the modern era?

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Question by shib: Technological changes to art in the course of the contemporary era?
I've got an assignment for art, and i require to answer questions then write an essay on 2 technological modifications that revolutionized the way artists approach artmaking in the modern day era(1880-1990). I want help with the technological modifications, i was thinking about doing digital photography but i cant believe of yet another alter, please

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