In the late 1800s, the growth of the railroad system led Midwestern cities such as Minneapolis and Cleveland to become <u>industrial centers</u>. By the end of the 19th century, a railroad network expanded significantly, linking cities such as Cleveland, Detroit, Minneapolis, and New Orleans. The impact of the railroads on Midwestern cities favored westward expansion; but, at the same time, it brought remote parts of the country into a national market economy where old industries expanded as well as new ones emerged. So, the correct option is "industrial centers".
There are two options that fits to be correct. But I guess you need only one. So my answer is <span>a. to place the US Army and Navy in one executive department.</span>
The two years prior to World War I in the region of the Balkans saw the rising of Serbian nationalistic Groups. Later came the assassination of the Archduke Ferdinand in the Balkan City of Sarajevo, main cause of the war.
