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Part A Work done by people in the furniture industry has changed dramatically over the past 100 years. The biggest change has been the introduction of electricity. Drilling a hole 100 years ago involved a lot of man power and a lot of time using a hand drill. Today we pick a very light wieght and powerful rechargable drill, line up the hole and it takes us a few seconds. Same goes for saws. 100 years ago you would need to use a hand saw