The era of the "cottage industry" was rendered mostly obsolete by

Industrial Revolution

Explanation:

The cottage industry term used to describe the manufacturing of goods at home in small scale. The era of the cottage industry existed before the coming of the Industrialization. Artisans produced wool, sewing cloth, and lace-making in their homes from the raw materials which they received from merchants for markets. The method of manufacturing materials was slow because it created by hand. Workers struggle to keep pace with the growing demand.