The correct answer is A
Explanation:
Kingman Reef as Hawai is located in the Pacific Ocean, which is between the American continent and Asia and Australia. Moreover, Kingman Reef is located just above the Equator line, which divides the North and South hemisphere on Earth and 6506 kilometers South to Alaska. Also, this territory covers around 0.03 and belongs to the U.S. as other Islands in the zone including Hawai. According to this, the location of Kingman Reef is shown by letter A, which is in the Pacific Ocean (between the Americas and Asia), and to the South of Alaska.
Railroads were made which were a part of industrialization.
Spartacues would have lead a mass revolt and lead the empire to impload and form small states
Article VI of the Constitution contains the Supremacy Clause, which states that "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, anything in the Constitution or laws of any State to the contrary notwithstanding."