Which statement explains why support for white supremacist groups increased during the 1920s?

The support for the white supremacist groups increased during the 1920s because wartime propaganda increased suspicion of people perceived as lacking in patriotism.

Explanation:

All the war propaganda during the 1920s was loaded with lots of patriotism and demanded citizens to respect and defend who they were as society, this opens the door to the supremacist groups exposing their point of view as a way to be patriotic and to keep their nation clean and free, the propaganda didn't only punish political opinions but also genetic heritage.

hello!

according to the passage the most suitable options are two. the first one is "by leading the aef to victory in several key battles" like the battle of saint- mihiel and the battle of cantigny mentioned in the passage you copied here. the second one is "by the aef and allied forces defeat germany" since the passage says that his army destroy the german resistance in the meuse- argonne offensive. and also, "by insisting that the aef operate as an independent force".

hope this