Horse-drawn chariots and bronze weapons were introduced into egypt by the

The correct answer is Hyksos. These were people from the East of Egypt who were Asiatic in origin. Hyksos basically means foreigner, but it is understood in terms of Ancient Egypt as those who came from the East and gave things like chariots and bronze working to Egypt.

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.