The answer is probably A, i could be wrong tho
Answer:
A) Conquest of Persia by Alexander of Macedon.
Cities developed professional firefighting and police forces.
Answer:
The Supremacy Clause states that the Constitution is above all state and federal laws.
Explanation:
The Supremacy Clause is located in the second clause of Article VI of the Constitution. It basically states that the Constitution of the United States, as well as the laws and treaties adopted by the federal government, constitute the supreme law of the nation. This means that the states of the United States are not sovereign but only the federal government, and that, as a last resort, it is always the authority of the Union which takes precedence over the constitution and the laws of each of the States of the Union.
José Manuel Morelos y Robles.