USA HISTORY

Detailed explanation-1: -Interchangeable parts, popularized in America when Eli Whitney used them to assemble muskets in the first years of the 19th century, allowed relatively unskilled workers to produce large numbers of weapons quickly and at lower cost, and made repair and replacement of parts infinitely easier.

Detailed explanation-2: -While Eli Whitney is best remembered as the inventor of the cotton gin, he was also the father of the mass production method. In 1798, he figured out how to manufacture muskets by machine so that the parts were interchangeable.

Detailed explanation-3: -The cotton gin revolutionized agriculture. It also made possible the cotton economy of the American South, perpetuating and increasing the practice of slavery upon which the agricultural system depended.

Detailed explanation-4: -With the creation of identical, interchangeable parts, unskilled workers could find employment in factories, the production of goods could be greatly increased, and repair and replacement of parts became much easier.

Detailed explanation-5: -Clock-makers had started making certain parts interchangeable in the 18th century. And Americans like to credit Eli Whitney with inventing the idea in 1803 to make muskets.