What conclusions can you draw about why historians must consult many sources in order to present a straightforward, unbiased account of events in the past?

The conclusion would be in order to have a historical record free from a historian subjective point of view. For example, if there is a need to verify if an emperor carried out an action, the historians would consult various sources to be sure that the action actually take place and was carried out by the said emperor.

Explanation:

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