<span>They used flooded rivers for crops for rich silt left behind</span>
The only answer there that would make sense is C<span />
Answer: The bigger cities had thriving cosmopolitan markets, and Constantinople became one of the largest trading hubs in the world where shoppers could stroll down covered streets and pick up anything from Bulgarian linen to Arabian perfumes.
Explanation:
New evidence is discovered & Oversights and errors are corrected
Thats what i personally think because new opinions have to be backed with evidence, while if a piece of evidence is lost or stolen, it doesn't change the arguments because even though it is lost or stolen, there ought to be copies of the original object, but im not sure about new technology being applied to evidence, but it can go either or, its a 50/50 because new technology can enhance historical discoveries, or find new ones, but applying new technology as evidence has to be backed up with facts as to why it should be applied
I'm guessing it was because the<span> Maurya Dynasty, specifically the rule of Ashoka. Not 100% sure though. </span>