Technically, yes, it is true that the development of the middle class signaled a decline in the importance of nobility, since people were able to have more economic freedom.
John Adams was the president who sacrificed his popularity.
Two things societies with iron technology developed socially are "divisions of labor" and "<span>hierarchical social classes," since these societies were generally more advanced than their counterparts. </span>
Hitler appealed to the nationalism of German people in that he promised to restore German dignity after Germany lost WWI and was forced to sign the Treaty of Versailles. The Teatry had numerous clauses the made German people angry and frustrated. So one of Hitler´s first promises was to abolish this treaty. Next, he promised to restore and rebuild Germany´s economy by givng farmers land, improving pensions and also making electical and water companies public. They would belong to all Germans.
Germany´s middle and lower classes were eager to punish those enemies that had led their country to hypeinflation and economic ruin. Hitler mainly appealed to restoring Germany´s national pride.This nationalistic future of a united and prosperous country that did not welcome immigrants or other ethnic groups made Hitler´s promises appealing.