How did cotton gin and interchangeable parts made production more efficient ?

He is better known as one of the greatest inventors of the United States of America. His invention change the economy of an entire nation. He brought the rise of cotton industry as an engine of economic growth in the Southern States. He began to practice a concept which was ahead of his time. The idea which would change the manufacturing sector of the United States and the world. He is best remembered as an inventor rather than a tycoon. He was Eli Whitney, the man who invented the cotton gin and thought of the idea of interchangeable parts.\
hope this helps.

He's too busy doing aaa games to be doing anime.