HELP ASAP In regards to the number of firms, which of the following is the best example of an oligopoly?
A. one firm producing 95 percent of the output
B. eight to ten firms producing 60 percent to 70 percent of the output
C. two to four firms producing 70 percent to 80 percent of the output
D. ten or more firms producing 90 percent of the output

This researchers data could him determine which of the following types of information about great britain during the industrial revolution

What is the definition of evolution

“[the city’s engineers excelled in areas] neglected by the greeks, such as the construction of roads and aqueducts, and of sewers that could wash the filth of the city into the tiber. they have built paved roads throughout the country, leveling ridges and filling up hollows, so as to make possible the movements of heavily loaded wagons. . and such is the quantity of water brought in by the aqueducts, that veritable rivers flow through the city and its sewers: almost every house has cisterns, waterpipes, and copious fountains.” —strabo, as quoted in empires ascendant: time frame 400 b.c.–a.d. 200 cisterns are tanks that hold water until it is needed; if a house has a cistern, it is likely to also have a. aqueducts. c. a swimming pool. b. a fish pond. d. sinks and faucets.