In the 1790s German playwright Alois Senefelder discovered which printmaking process?

In the 1790s, German playwright Alois Senefelder discovered the lithography printmaking process. This technique involves drawing images or text onto a flat stone or metal plate with a greasy substance, which is then treated to accept ink only on the drawn areas. Lithography allowed for more detailed and expressive prints compared to previous methods, significantly influencing art and publishing. It became a popular medium for artists and printers in the following decades.