Periodization is a useful concept to apply when

Organizing history

Explanation:

Periodization helps us when we are organizing history. Because history happens as a continuum, with no beginning and no end, it is difficult to study it in an organized manner without being arbitrary. One of the ways in which historians achieve this is by dividing history in periods that share common characteristics. This makes the study of history more manegeable.

the story goes that because of this belief, constantine was able to defeat his foes. constantine became an ardent1 christian. christianity and other religions were tolerated under constantine's rule. constantine also was responsible for the building of a great cathedral in rome.

should be the answer hope this

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