After 450 years as a republic, Rome became an empire in the wake of Julius Caesar's rise and fall in the first century B.C.
Comparative advantage I would think. Yep, Google-sensei confirmed it:) Comparative advantage is the answer.
Answer:
Date-7 November 1917.
location- Petrograd Russian Republic
<span>The Asiatic Huns were also known as the Xiongnu.</span>