Answer
pretty sure it’s D
step by step
Eli Whitney is credited with putting the concept of using mass-produced interchangeable parts into practice. He came up with this concept during a war, when he used these parts to create guns.
Peculiar institution<span>. ... "(Our) </span>peculiar institution<span>" was a euphemism for </span>slavery<span> and its economic ramifications in the American South. "</span>Peculiar", in this expression, means "one's own", that is, it refers to something distinctive to or characteristic of aparticular<span> place or people</span>
