Which of the following is an example of a lord
a. a farmer who was not allowed to leave the land on which he worked
b. a soldier who swore an oath to protect the people and the land of a superior
c. a ruler whose subjects swore to absolute loyalty and service
d. a person who collected taxes and provided peasants with homes

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.

The three steps before modern english were indo-european, germanic, and old english. as peoples moved around the eurasian continent, their languages changed. throughout the ages, the languages became more specialized. as english has many germanic influences, it is easy to see how this was one of the forebears. also, old english was one of the main ancestors of the modern language, spoken in the 5th through about the 13th centuries.