In 1868, an American woman inventor created a machine that changed the future and led to the mass manufacture of flat-bottom paper bags still widely used to carry groceries all around the world: How Margaret E. Knight changed paper bag manufacturing?

In 1868, an American woman inventor created a machine that changed the future and led to the mass manufacture of flat-bottom paper bags still widely used to carry groceries all around the world. Margaret E. Knight developed a machine that changed paper bag production. Her invention reduced manual work and helped businesses produce square-bottom paper bags on a large scale. She later earned many patents and became one of the most productive women inventors in American history.