How did steam locomotives lower the cost of transporting raw materials and finished goods?
a. they cost nothing to run because they ran on steam.
b. they could transport many materials or goods at once.
c. they were uncomplicated and inexpensive to build.
d. they were safe and cut the chance of costly accidents.

 b.They could transport many materials or goods at once.

Explanation:  Steam locomotive is one of the characteristics of the industrial revolution and an enormous increase in production. Thanks to steam locomotives, much larger quantities of goods, semi-finished goods, could have been delivered at once and more often than before. In this way, production has increased, more profits have been made, and due to the multiplicity of goods delivered at once, the costs of transport have been reduced, which is one of the basic postulates of the economy.

the correct answer is B)

Explanation:

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2686-2181 bce-- "egyptian civilization developed along the nile river in large part because the river’s annual flooding ensured reliable, rich soil for growing crops."

1069-664 bce-- "ancient egyptians developed wide-reaching trade networks along the nile, in the red sea, and in the near east."