Hello. Although you showed the book to which the question refers, you did not say which incident the question refers to, as there are many incidents covered in the book. This makes it impossible for your question to be answered, but I will try to help in the best possible way.
The main factor that points to the transition from old forms of war to new forms of war during the first world war was the use of technologies, mainly those driven by the industrial revolution, which gave the army a warlike power never seen before and allowed each army had access to fighter planes, tanks, submarines, toxic gases and others that did not exist in previous wars and that caused much greater destruction.
The correct answer is A. As a common man.
Andrew Jackson's election inaugurated the so-called Era of the Rise of the Common Man, which lasted up to the Civil War.
During his campaign, Jackson was portrayed as a common man to show that someone's lineage did not ensure a place in office, but it was hard work and the candidate appeal to the voters and to portray himself as one of them. To achieve the presidency, he reinforced his humble origins and his struggle and success in adult life, even downplaying some of his achievements to make him look one of the people.
Geo = earth
Sphere = circle
Geosphere is the collective name for the 4 different parts of the earth
Typically the harder parts of the earth :)
