➤ When a few companies dominate the market, it’s called Oligopoly
An Oligopoly is referring to when a few companies dominate, overpower or become more successful or larger than other companies or markets. It does not matter how powerful the dominated or dominating companies are. Oligopoly is simply referring to a few companies. Although only a few firms dominate, it is possible that many small firms may also operate in the market.
He did that because rome started to fall and was taking pressure by north countries.Byzantium was the best solution because of it's geographic location and it could control the trade
