Answer:
elevated trains and skyscrapers made of steel
Diseases introduced by the Columbian Exchange caused a sharp decline in population levels in the Americas beginning in the 15th century. The correct option among all the options given in the question is option "C". The natives never faced the diseases that attacked them and so they did not have any cure for them. <span />
William Jennings Bryan because it was during the Grange and the farmers alliance
<span>American troops helped turn the tide of the war. Once Russia dropped out of the war in 1917 because of the Bolshevik Revolution, the Germans were able to push all of their soldiers from the Eastern Front to the exhausted Western Front where they faced decimated French and British troops. However, the timely arrival of the American Expeditionary Force under the leadership of John J. Pershing, the Allies, including America, were able to turn the tide and push the Germans back from the Western Front.</span>
