Answer:
the Anasazi
Explanation:
Anasazi is one of the North American tribes that inhabited the place. Huge and magnificent cities were built by the Anasazi inhabitants. Etymologically, the word 'Anasazi' implies the "ancient outsiders". The inhabitants were proficient in growing crops and making pottery. The reason for the decline of civilization is estimated to be the attacks by the other tribes. While some historians predict that the exhaustion of the resources would be the reason for the decline.
It shuts down production and it makes people feel like they are going against the union when they cross the picket line. Like, Earnings will stop, union members who strike for long periods of time will loose benefits morale is more likely to deteriorate, communication from company's will usually stop.
To have checks like medical check and criminal check to make sure the person is safe to come to the US. Like they won’t allow criminal immigrants or they don’t want to spread disease.