The Chicago and Calumet
Rivers originally flowed into the St. Lawrence by way of Lake Michigan, but having been redirected by constucting canals so that the water now empties into the Mississippi by way of the Illinois River.
A.
B. Rivers had originally flowed into the St. Lawrence by way of Lake Michigan, but they had been redirected by constucting
C. Rivers, which originally flowed into the St. Lawrence by way of Lake Michigan but have been redirected by the construction of
D. Rivers, originally flowing into the St. Lawrence by way of Lake Michigan, but having been redirected by the construction of
E. Rivers, originally flowing into the St. Lawrence by way of Lake Michigan, have been redirected through the construction of
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