At its height, what percentage of american workers were employed in an automotive-related industry?

The percentage of American workers are 20 percent

Explanation:

The Automotive industry deals with the manufacture, repairs and maintenance of automobiles of all type and shapes. in this ind of industry the workers needed are usually highly skilled workers who can assemble and maintain automobiles Engines, the electrical section of the Automobile and also the other mechanical parts that make up the automobile.

At the height of the Automotive industry about 20 % of American workers were directly or indirectly employed to work in this industry in one way or the other although the percentage was reasonable but didn't encompass the vast majority of American workers because of the level of skills required by the industry.  

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