A.way
B.curtain
C.ventilating
D.warrant
E.obligated
F.quantify
G.innovative
H.foundation
I.sheathing
J.context
K.vibrating
L.visual
M.persevere
N.spatial
O.dictated

A．Because it affected the prices that farmers could receive for their crops.
B．Because it decreased the power of the railroads to control farm prices.
C．Because it provided evidence that Jefferson’s ideal could be achieved.
D．Because it made farmers less dependent on local bankers.