Deflation
Deflation occurred periodically in the U.S. during the 19th century (the most important exception was during the Civil War). This deflation was at times caused by technological progress that created significant economic growth, but at other times it was triggered by financial crises — notably the Panic of 1837 which caused deflation through 1844, and the Panic of 1873 which triggered the Long Depression that lasted until 1879. These deflationary periods preceded the establishment of the U.S. Federal Reserve System and its active management of monetary matters. Episodes of deflation have been rare and brief since the Federal Reserve was created (a notable exception being the Great Depression) while U.S. economic progress has been unprecedented.
New Deal
Worldwide, the Great Depression had the most profound impact in the German Reich and the United States. In both countries the pressure to reform and the perception of the economic crisis were strikingly similar. When Hitler came to power he was faced with exactly the same task that faced Roosevelt, overcoming mass unemployment and the global Depression. The political responses to the crises were essentially different: while American democracy remained strong, Germany replaced democracy with fascism, a Nazi dictatorship.