Entangling alliances grew the small conflicts instantly.
When Austria-Hungary attacked Serbia for just the region of Bosnia-Herzegovina, automatically Russia and Germany were in the war.
Knowledge and skills is the answer you are looking for :)
I believe the answer is It shows that Charlemagne conquered a huge part of Europe.
Charlemagne became the first man in history to conquer Western Europe since the downfall of the Roman Empire. Eventhough his empire was not as large as the Romans, His achievement still pretty much respected becuase many experts believe that the current France and England is the fragments of what used to be Charlemagne's empire.
<span>By defeating the British in New Orleans during the War of 1812</span>
