Sentence:  As America on wheels <WSD>was</WSD> responsible for an industry of motor courts , motels , and drive-in establishments where you can dine , see a movie , shop , or make a bank deposit , the ever-increasing number of boating enthusiasts have sparked industries designed especially to accommodate them . 
Meaning of the word marked with <WSD> tags:  have the quality of being; (copula, used with an adjective or a predicate noun)