In the 1800s, steam-powered locomotives were more efficient at moving and hauling products than carriages. So, option (d) or (iv) is the correct answer.
Using steam-powered locomotives substantially boosted the speed and efficiency with which people could travel throughout the country in the 1800s.
The steam locomotive made it possible to move things at a considerably faster rate than by horse. People knew exactly where and when their goods would arrive thanks to the railroad.
The railways also provided a safer trip for the cargo, as robbing a train was considerably more difficult than robbing a horse-drawn carriage.
Therefore, locomotives did not specifically transport cargo or passengers, they did all in whole as the power system. So, the best-suited answer is an option (d) or (iv).
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