What did James Watt do to the steam engine to start the Industrial Revolution?(1 point)

Responses

He invented the very first one.
He invented the very first one.

He applied the use of horses to the steam engine to make it faster.
He applied the use of horses to the steam engine to make it faster.

He improved the existing design to make it more efficient and cost effective.
He improved the existing design to make it more efficient and cost effective.

He attached it to a locomotive.

He improved the existing design to make it more efficient and cost effective.