Answer:
I believe it is Spain. Please correct me if I am wrong.
Explanation:
The right hand side is different because it could have a stronger / weaker cut. idk
Answer: Most likely the industrial revolution.
Explanation: The use of machines in production became more and more prevalent, eventually many factories were built in cities which caused pollution therefore making the air gross.
Answer:
On August 14, 1935, the Social Security Act established a system of old-age benefits for workers, benefits for victims of industrial accidents, unemployment insurance, and aid for dependent mothers and children, persons who are blind, and persons with disabilities