In this task, you are given two sentences in the English language (Sentence 1 and Sentence 2). Your task is to identify the connecting word between the two sentences.

Sentence 1:As originally proposed in 1925 , several US Highways in Wisconsin and Michigan 's Upper Peninsula were to be designated . Sentence 2:However , the routings for two highways were different in Michigan in 1925 than on the final 1926 map .
however