Read the original and improved research questions. original: what is the relationship between natural resources and the industrial revolution? improved: how did coal contribute to the industrial revolution in pittsburgh in the 1880s? which of the basic question words improve this research question? select three options. how what when where why

c 3 branches because idk why they had 3 well when:

you think of it there are still contrys with 3

it the big letter b heart my answer

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