Why Did Autocratic Rulers in the Hellenistic World Encourage Manufacturing

Why did autocratic rulers in the Hellenistic world encourage manufacturing industries?

A) Manufacturing trade goods slowed the development of harbors,roads,and canals,thus preserving their power.
B) Manufacturing distracted local and foreign rivals from aggressive military campaigns.
C) Manufacturing increased international trade revenues and therefore taxation and tariffs.
D) Manufacturing brought in exotic goods that were previously unavailable in the ancient world.
E) Manufacturing trade goods increased the development of harbors,canals,and ship design.