How do you think Hitler became leader of the Nazi party in the first place? He was famed for his Nationalistic speeches centred around the treaty of Versailles. Sure his popularity was waning before the hit of the great depression but he used this as a platform to gather support for the reversal of the treaty as he placed great emphasis on it's role in Germany's misfortunes. His entire foreign policy during his first years in power were focused upon the reversal of the treaty of Versailles, hence why many had sympathetic views towards his cause and supported him. Both had a great contribution and it's pretty fair to say that Hitler might not have come to power had the treaty not been so harsh.
No no no, Hitler's rise had everything to do with the depression, considerably more so than the ToV. This is going to be long, I'll try to keep it "brief" (as briefly stated as some of the most important history of modern Germany can be).
In the early days of the Weimar Republic, which had been created after the collapse of the monarchy, the new government had very little support - nobody liked it, with many politicians still holding allegiance to the Germany monarchy while most of the populace saw the experimental government as weak and pro-French. After the chaotic government (which was made up of several different parties fighting for control as a result of the disastrous proportional voting system of the Weimar) failed to pay reparations agreed upon in the treaty of Versailles, France invaded and occupied the Ruhr in 1923 in order to profit by selling its resources.
This was of course seen as an affront by the German voters, who saw the invasion as unnecessary act of aggression against an already beaten nation who believed they rightfully owned the Ruhr's resources. As a result, there was a large surge of nationalism in the polls, with the Nazi party gaining quite a lot of votes. Hitler then of course went on to attempt a a coup d'état against the Weimar, which of course failed and Hitler was imprisoned, though the large surge of nationalism among the court and jury got him off with a very lax sentence (though the party of NSDAP was successfully banned, preventing the party from growing while Hitler was imprisoned). By the time Hitler was released from prison in 1924, the nationalistic and extremist upsurge among voters had faded due to successful negotiations with France. Hitler got the party unbanned and became leader again in 1925, but had little success in the ensuing elections for government.
To make matters even worse for Hitler, the pragmatist and diplomatic wizard Gustav Stresemann brought out the Dawes Plan in 1924, which made paying reparations extremely more manageable for Germany, and reformed the Reichbank and created the Reichmark currency in order to counter the insane hyperinflation that was wreaking havoc among the middle and lower class (the main voter demographic of the Nazis). Stresemann then went on to serve as an extremely effective foreign minister for Germany and started to rebuild relations with France and Britain, but more importantly with the USA. From the mid 1920s support for the Nazis dropped steadily as Stresemann set Germany on the path to economic recovery with the help of the sympathetic USA who granted Germany gracious loans to manage the cost of reparations, and even invested in German business and tourism thanks to Stresemann's successful negotiations. Germany went on to sign the Kellogg-Briand Pact in August 1928, which increased foreign relations considerably (many nations still had PTSD from WW1 and were terrified of Germany rearming. Many nations such as France had purposely done little to aid Germany economically in order to prevent them from rearming. This pact put an end to most of this skepticism, with Germany renouncing the use of violence to resolve international conflicts).
The Kellogg-Briand Pact set the foundation for the Young Plan, which was successfully negotiated with American investment banks and the US government in 1929 and was implemented shortly after. The plan reduced German commitment to reparations and the USA increasingly held up Germany's economy. However, Stresemann conveniently died before the Depression, and the Young Plan was shortly lived. The USA began to pull all money out of Europe including that committed to the Young Plan, and also decided it wanted its money back from earlier investments into German industry and economic recovery. Germany of course did not have the money to repay the USA and defaulted on its loans, with the country plummeting yet again into chaos. Mass hunger and widespread suffering ensued (especially among the working class which was now very large due to the middle class rapidly shrinking). Needless to say Germany was now in an extremely dire economic and social situation, completely abandoned by everyone including the USA. As extreme times call for extreme leadership from the voters, NASDAP's popularity rose rapidly on wards and you know the rest.
So yes, had the Great Depression never occurred the USA would probably have dragged Germany out of the gutter and Hitler & NSDAP would have faded into irrelevancy.
