In general, it was an increase in the service industry that led to a decline in labor union membership, since many of these workers don't need representation.
Feudalism was a combination of legal and military customs in Medieval Europe and Medieval Japan. It was a system of structuring society around relationships which were based on the holding of land in exchange of labor and service. This encompasses the wider society. A peasant was protected by his lord who would give him housing and security and the peasant would work on the lord's land. This is a typical example or characteristic of feudalism.
Answer: Sharecropping
Explanation: I'm Smort
Sharecropping was a system of agriculture instituted in the American South during the period of Reconstruction after the Civil War. It essentially replaced the plantation system.
Authorized in a document (like the Constitution).