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: -Eli Whitney, (born December 8, 1765, Westboro, Massachusetts [U.S.]-died January 8, 1825, New Haven, Connecticut, U.S.), American inventor, mechanical engineer, and manufacturer, best remembered as the inventor of the cotton gin but most important for developing the concept of mass production of interchangeable parts.

Detailed explanation-3: -In 1798, Whitney’s armory pioneered the use of interchangeable parts, which are nearly identical parts that can be easily mass produced and replaced.