Which of the following statements does not describe a way the sewing machine industry changed after the introduction of interchangeable parts? a. the costs of sewing machines began to increase. b. isaac singer invented a machine for home use. c. sales of home machines increased. d. the mass production of home sewing machines began.

The appropriate choice for the non-event is ...

... A. The costs of sewing machines began to increase.

Interchangeable parts generally reduce costs and increase demand (and production).

true. earthquakes are felt whenever there is a slip around a fault in the rocks below the earth. this reorientation of faults create sesmic waves and is known as earthquake, the severity of which is measured in richter scale. these are more prominent in hilly regions as the rocks usually form faults to balance the pressures on it.