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

Why was the emancipation proclamation widely attacked when it was written?

When and why did the united states enter world war 2

Which of the following questions must be asked about the use of resources in an economic system a. what allocation will provide the fastest growth b. what is the most secure allocation c. what is the fairest allocation d. what is the most effective allocation