Which of the Following About the Aegean World Is Correct

Which of the following about the Aegean world is correct?

A) Political centralization was quickly established due to the large common plain that dominated the landscape.
B) There was little trade, as all valued commodities were close at hand.
C) Polities struggled, like in Mesopotamia and Egypt, to recover from the droughts of the second millennium BCE.
D) A number of islands flourished within a seaborne trading network focused on the exchange of tin and copper.