Why is a good transportation system needed for the growth of industry

If you cant move goods from one Place to another you cant trade, which means you cant bye or sell anything.
If the system ist bad, it Takes longer and costs more to Transport goods which is Bad because of the competition in the (world's)marcet(you shouldnt be too slowly and the prices very cheap)

Because the discoveries were some of the oldest human remains.

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.