Answer:
i think later i'm not actually sure
Explanation:
Answer:
a fortified boundary line running through dense populations
Explanation: :()
Answer:
Machines
Explanation:
Machines became widely used in farming, and consequently, farms required fewer workers. Large, technologically advanced farms replaced subsistence farms. The Industrial Revolution demonstrates an idea known as economies of scale. According to this principle, increased production of goods leads to increased efficiency.
