I believe it is A, constantine the great built the city etc.
Answer:
a social class comprising those who do manual labor or work for wages; "there is a shortage of skilled labor in this field"
Explanation:
The Yellow and Yangtze Rivers
Answer:
A. Thomas jeffersons plan
:) sorry if its wrong
Comparative advantage.
The production of a good or performance of a skill for which a person is best suited is what is termed comparative advantage. Or, on a national level, the production of goods for which a nation's resources are best suited is comparative advantage.
Absolute advantage refers to one person (or one nation) having a consistent advantage over another in making a particular product efficiently and best.