Why was it called the dark ages

Some scholars perceive Europe as having been plunged into darkness when the Roman Empire fell in around 500 AD. The Middle Ages are often said to be dark because of a supposed lack of scientific and cultural advancement. During this time, feudalism was the dominant political system

the answer is c.

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first industrial revolution - the first wave of the industrial revolution lasted from the late 1700s to the mid-1800s. it industrialized the manufacture of textiles and began the move of production from homes to factories. steam power and the cotton gin played an important role in this period.