Answer:
#7 is self-designation by Indo-Iranian peoples in ancient times
Explanation:
The answer is C. Adena and Hopewell.
The various cultures collectively termed Mound Builders were inhabitants of North America who, during a 5,000-year period, constructed various styles of earthen mounds for religious and ceremonial, burial, and elite residential purposes. These included the Pre-Columbian cultures of the Archaic period; Woodland period (Adena and Hopewell cultures)
Because Union and strikes were banned by the government WORKERS' WAGES DECREASES.
By abolishing Unions and the right of the workers to stage strike, the government gave enormous power to the industrialists and this led to decrease in the wages of the workers. This was majorly because, the employers knew that the workers have no other choice but to accept what they are offered.
