Answer:
The answer is mass production, interchangeable parts, and mechanization revolutionized American industries.
You need to put the choices on here thank you ^^
In 1950 it was 9% but increased to about 90% towards the end of the 1950’s sorry if this does not help
Benedict Arnold was an American general who defected to the British army
<span>a white American of non-Hispanic descent, asdistinguished especially from an American ofMexican or Spanish descent.</span>2.(<span>sometimes lowercase</span><span>) an English-speakingperson in a place where English is not thelanguage of the <span>majority.</span></span>
