The Battle of Marathon in 490 BC was part of the First Persian War. This was an attempt to punish Athens and Eretria.
What was th act? Seems like the question is incomplete
Answer:
with a resource such as grain that was very common in egypt, trading it for resources not as common opens doors for bigger trading and more market. Wood became widely available and grain became available to others who traded in wood for it.
B. Africa to North America
