This article does not have any sources. (January 2010)
Manufacturing is producing goods out of raw materials. It is a branch of industry. It includes making big, complicated things that need many steps to finish, and small, simple things. Often machines are involved in manufacturing.
In the past, products were made by handicraft workers using tools and manual labor. In modern times, most manufacturing jobs were replaced by automated machines in a factory, which made the products much faster and in turn - cheaper than humans could.