What event in the early 1900's was such a cataclysmic event that it ended an era of idealism and set the stage for the search for new values: chaos followed by a period of adjustment?

The correct answer is World War I

Although President Wilson swore that the Great War would be the end to all wars and that he would concentrate on domestic affairs, he was compelled to push the United into the First World War

abraham lincoln, according to anyone who was connected with agriculture, represented the worst of northern politicians. shortly after lincoln was elected, south carolina seceded from the union. they along with other southern states, retained their anger. in a way, it was their own fault: the democrats were split in the south. some wanted slavery to be extended in other states that were about to join the union and some didn't want it badly enough. lincoln had a solid backing from his party: the republicans were united in not wanting slavery to be expanded.

profound political, administrative, and social changes in the british isles.