The occupational classification that included doctors, lawyers, and dentists in 1880 was the 'professional service' category. It would not be agriculture, fisheries, and mining because those professions are not in that field.
Answer:
“A rapid increase on the population” or “Rapid social and the creation of elite classes of rulers”
Explanation:
Article 6, Supreme Law, refers to the Supreme Law of the Land.
It states,
"This Constitution, and the Laws of the United States which shall be made in Pursuance thereof; and all Treaties made, or which shall be made, under the Authority of the United States, shall be the supreme Law of the Land; and the Judges in every State shall be bound thereby, any Thing in the Constitution or Laws of any State to the Contrary notwithstanding."
Meaning that:
-the Constitution,
-the Laws of the U.S. (current, and future ones),
-Treaties that have been made or that will be made -
Are what make up the Supreme Law of the Land.