What was the importance of interchangeable parts during the Industrial Revolution of the early 19th century? a. They allowed for the mass production and reduced price of producing American goods

b. They brought fame to the international inventor Eli Whitney

c. They were first used in production of the cotton gin

d, They revolutionized the cotton gin

a) They allowed for the mass production and reduced price of producing American goods

answer; /// the correct answer is evidence of the olmec civilization has been found in southern american in a hot steamy forest, archaeologists have found earthen artifacts at several sites that were evidence of the olmec civilization. these   artifacts were mounds,courtyards and pyramids build of stones, also on top of the mounds were many monuments made of stone, some of these stone structures are very large, they weigh as much as 44

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