One of the most significant challenges is building an airplane had to do with "propulsion", since the technology that allowed motors to have enough energy to lift an airplane into the sky with a passenger wasn't available for most of history.
Answer:
I would say that his main achievement was his ability to unite the whole Greece under his reign and authority after battle of Chaeronea.
Explanation:
While he was a child, Philip was sent into Thebes as a part of treaty, which led him to be more and more acquainted with their culture, military tactics, governing system.
Therefore, when he started ruling in Macedonia he tried to use all of these features to strengthen his authority and later to spread it across whole Greece.
Britain didn't have enough settlements to enforce the claim.
Answer:
Answer Below!!!
Explanation:
There would have been more Sea Trade.
Hope I Helped!!!!
:)