Milling is the
a. craft of using metal to create different parts, assemble parts together, or create larger structures.
b. process of cutting and shaping unwanted materials or parts to create a desired shape.
c. fabrication method that joins together materials, usually metal.
d. process of making a mold of something; primarily used with bronze metalworking.

The answer is B

b. process of cutting and shaping unwanted materials or parts to create a desired shape.

the correct answer is the following is a list of inventions made in the medieval islamic world, especially during the "islamic golden age" (8th to 13th centuries),[1][2] as well as the late medieval period, especially in the emirate of granada and the ottoman empire.

science and technology in the islamic world adopted and preserved knowledge and technologies from contemporary and earlier civilizations, including persia, india, china, and greece-roman antiquity, while making a number of improvements and innovations.

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