Why European countries turned to Fascism while others stayed democratic after World War 1 and the Depression?

The countries that stayed democratic were (with one exception) those with a long-standing, unchallenged tradition of democracy: Britain, the Scandinavian countries, Switzerland, Belgium, the Netherlands, Luxembourg, the Irish Free State (as it was then). In addition, Czechoslovakia. France was deeply divided but managed to remain a democracy till invaded in 1940. It may sound incredible nowadays, but in most of Central, Eastern and Southern Europe democracy was widely regarded as very daring indeed, as 'naughty-naughty', as dangerous and as 'Communism in disguise'.