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The correct answer is:
D. attaching the top of the shoe to the sole was laborious, so matzeliger invented the lasting machine
Jan Ernst Matzeliger (1852 – 1889) created the lasting machine, which significantly changed the way shoes were manufactured.
Matzeliger´s automated shoe laster was patented in 1883. It made possible to produce between 150 and 700 pairs of shoes a day. 50 pairs is what a skilled hand laster could produce in a ten-hour day. Matzeliger´s novelty cut shoe prices in half.
Answer:
D. attaching the top of the shoe to the sole was laborious, so matzeliger invented the lasting machine
Explanation: