What did rome become in the end of the 6th century bce.

To give you a little background, the 5th century was a time period where the roman empire had two kings. One to rule the west and the other to rule the east. This made it easier to oversee the entire land. (Rome was the biggest empire ever recorded.) By the end of the 5th century, though, western Rome had fallen to the hands of their enemies while the eastern part held their ground. Anyways, during the 6th century the overthrow of the roman monarchy took place, they vowed to never let another king rule over Rome again. Eventually a dictatorship resulted.

high entry costs prevent new producers from entering the market.

explanation:

an oligopoly is a term used to clarify the structure of a particular market, industry, or organization. a market is considered oligopolistic or amazingly focused when it is shared between a few companies.