The use of steam power really did revolutionize transportation. however, in the beginning, steam power in boats and trains had a few disadvantages. name two of them.

In the beginning right?
1) Steam power was generally new, and it, as many new things, were not stable, and could lead to explosions, etc.
2) After oil,etc came out, steam power really didnt work as well as oil, etc, and it was a lot more expensive

Your answer should be choice b!