The introduction of (interchangeable parts, cotton gin, labor unions)

led directly to the (patent systems, mass production, decrease)
of goods, because of this, goods could be made and sold at more (increased. affordable insufficient)
prices

The introduction of interchangeable parts, the cotton gin, and labor unions led directly to the decrease of goods because of their impact on mass production. This allowed goods to be made more efficiently and at increased affordable prices, making them more accessible to a larger segment of the population. Additionally, the patent system helped protect the innovations and advancements that made these improvements possible, further driving down costs and increasing availability.