Which best describes the availability of substitutes in a monopoly?

Is trump a good or bad president support your answer

By the end of the 1800s, there was a change in the nature of the immigrants coming to the united states. immigration from northern europe—england, ireland, germany, and scandinavia—declined, while immigration from italy, russia, and austria-hungary grew. in fact, between 1900 and 1910, more than three-fourths of all immigrants came from these three countries. unfortunately, these countries were far removed england, the home of our founders, and the immigrants who came from them had a hard time adjusting to life in their new country.

Which distinctive feature of the notre dame cathedral allowed it to accommodate its large stained glass windows? a. its barrel vaults b. its flying buttresses c. its quadrant arches d. its square bays