Question

Why were many of the machines that sped up production and travel invented during the 18th and 19th centuries?

Answer 1

A lot of machines were invented during the industrial revolution, which was during these times.

Answer 2

The main reason why so many of the machines that sped up production and travel were invented during the 18th and 19th centuries is because this was the time of the Industrial Revolution, which saw a great increase in factory production, which helped create the machines in question.