The name speaks for itself.
Any product that can be used in/with another product or part is far more useful than one that can only be used with one product or part.
the interchangeable parts where invented in 1798.
interchangeable parts are used in factories
Interchangeable is an adjective; parts is a noun.
1995 and 1996 Galant parts are interchangeable. Some of these interchangeable parts are the floor panels, handles, and aircon vents.
Eli Whitney invented the cotton gin and interchangeable parts.
Theconstruction workers needed interchangeable parts for their model building.
Interchangeable with what other vehicle? You list none. Some parts from the Explorer may be interchangeable with the Ranger.
Interchangeable parts made production faster and easier
Yes very much. Without interchangeable parts most things would have to be made from scratch. Interchangeable parts allows for a part to be replaced without having to rebuild the entire item. Imagine cars without interchangeable parts.
1929 and 1935 Chevrolet body parts are not interchangeable.
The Interchangeable parts were used mainly in the construction of firearms, then spread to mills.