Sentence:  The first superhighways - New York 's Henry Hudson and Chicago 's Lake Shore , San Francisco 's Bay Bridge and its approaches , a good slice of the Pennsylvania Turnpike - were built as part of the <WSD>federal</WSD> works program which was going to cure the depression . 
Meaning of the word marked with <WSD> tags:  being of or having to do with the northern United States and those loyal to the Union during the American Civil War