Checks and Balances, sorry comment if this is wrong.
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.
Answer: Powder Keg of Europe.
Explanation: This is due to numerous nationalistic movements against colonial powers, Austria-Hungary and the Ottoman Empire.
