What is one reason why the expansion of the railroads caused prices of products to drop during the gilded age?

Railroads provided cheap and fast transportation for both raw materials and products.

Explanation:

When the cost of production drops, the sellers and merchants are able to offer a better-lower cosot for their buyers, when the railroads started expading, the new-cheaper way of transportation made it possible for products and raw materials to lower their production cost, this meant that they were able to offer the same products and materials at a cheaper cost.

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the berlin blockade was an international crisis that arose from an attempt by the soviet union, in 1948–49, to force the western allied powers (the united states, the united kingdom, and france) to abandon their post-world war ii jurisdictions in west berlin. in march 1948 the allied powers decided to unite their different occupation zones of germany into a single economic unit. in protest, the soviet representative withdrew from the allied control council. coincident with the introduction of a new deutsche mark in west berlin (as throughout west germany), which the soviets regarded as a violation of agreements with the allies, the soviet occupation forces in eastern germany began a blockade of all rail, road, and water communications between berlin and the west. on june 24 the soviets announced that the four-power administration of berlin had ceased and that the allies no longer had any rights there.