Answer:
The coal-fired steam engine was soon developed. It became the key technology of the Industrial Revolution. ... The steam engine powered factory work. It also freed manufacturers from the need to build their factories near water.
The answer should be B
Hope this helped....... maybe brainliest????
Explanation:
Given
A Planet is moving at a rate of 3 cm/year
distance between planets is 1500 km
and 1 km=1000 m
1 m=100 cm
No. of years required to cover 1500 km=