The answer is 'Railroads'
The Industrial Revolution in England lead to the development of trains and fast travel.
The United States quickly adopted the technology and brought in English businessmen and engineers to develop railroads in it's sprawling western states.
Railroads were integral in the early years in to cement newly acquired states under the control of the Federal government.
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The correct answer is letter D.
Explanation: Turner is widely recognized as one of the most influential historians in the United States in the first half of the twentieth century. In 1889, he defended at Johns Hopkins University his doctoral dissertation, entitled The Character and Influence of the Indian Trade in Wisconsin, published in large form and revised in 1891. In the year 1910, he was the president of the American Historical Association. In 1933, he received the Pulitzer Prize for History for the text The Significance of Sections in American History.
East Germany was one combatant
Statements can be classified into facts or opinions. Facts are those statements which are based on actual evidences and explanations. On the other hand, opinions are subjective thoughts and are based on personal views. On the given options, the excerpt from <span>“The Girl Who Silenced the World for Five Minutes” that states an opinion is option D.</span>
