Explanation:
Preliminaries. Austria, Prussia, Russia, and Great Britain, the four powers that were chiefly instrumental in the overthrow of Napoleon, had concluded a special alliance among themselves with the Treaty of Chaumont, on March 9, 1814, a month before Napoleon's first abdication.
Albert Einstein was born in Ulm, Germany and he taught at the University of Zurich
It's an example of a hot spring
The answer is income because a person cannot buy a good without a physical means of purchasing the good.