The president doesn't like the idea of a national health care plan, but she
supports the plan because most citizens prefer it. Which constitutional
principle does this scenario best illustrate?

The correct answer is Popular sovereignty

Sovereignty, in its political or legal sense, is the exercise of authority that resides in a people and that is exercised through its representative constitutional organs. Sovereignty is a superior authority that cannot be restricted by any other power and, therefore, constitutes itself as the absolute power of legitimate action in the political and legal sphere of a society.

A state in which Popular Sovereignty rules is created and subject to the will of the people, who are the source of all political power. It is the basic principle of democracies.

the industrial development of cities in the ruhr area in the nineteenth century is described. the research was based on english and german language sources. several factors that shaped growth and paths of the cities were categorized and analyzed. they are locations, resources, traditions, entrepreneurs, and technological developments. locations and resources were the most important among them; other factors may be regarded as consequences from locations and resources. among the cities, bochum, essen, gelsenkirchen, and dortmund had the richest resources and most favorable locations in the transportation network and grew to be the largest cities in the ruhr area near the end of the nineteenth century. riverside location was also a favorable factor for the development, as shown in the development of duisburg on the confluence of rhine and ruhr. resource distribution can explain the rise of textile industry, metallurgical industry, and coal and iron industries, and the northward progression of the mining industry. tradition was an important factor for cities such as krefeld, barmen, elberfeld, solingen, and remscheid, which experienced development based on their traditions through the nineteenth century. various entrepreneurs exerted influences within and beyond the local level over the ruhr area. technological development stimulated the northward progression of the mining industry and the deep connection between the coal and the iron industries.