You can do this, although you need to be comparing these factors to the Great Depression and give them a value in comparison to that.I only managed to find one brief essay, it sort of helped though I guess, but still not enough information. With that being said, if they were to ask "Assess the impact of the Great Depression in the collapse of the Wiemar Republic" would it be possible to argue a thesis along the lines of "The Great Depression had greatly contributed to the collapse however It was a series of other factors as well" then spend half the essay talking bout the great depression and the other half talking bout other factors? Or would they only look for a specific argument based solely on the Great Depression?