The invention of the in the late 1700s and its widespread use beginning in the early 1800s triggered the industrial revolution

The invention of the steam engine in the late 1700s and its widespread use beginning in the early 1800s triggered the industrial revolution. Steam engine is an engine that uses steam as its working fluid to perform mechanical work. James Watt, a Scottish engineer patented the steam engine in 1781.

The answer b is correct this all occurred during the red scare