Answer:
diagnosis and treatment of kidney calculi. He researched and studied the function of and diseases of the kidneys.
Basicly if you wernt part of any royal family or part of the servents whom served the nobles you were poor and hungry most of the time.
Environmentalism is a social movement dedicated to protecting the natural world through changes to environmentally damaging human activities; through the adoption of procedures of political, economic, and social organization that are thought to be essential for, or at least favorable to, the nonthreatening treatment of the environment by humans; and through a reconsideration of humanity’s relationship with nature. On the other hand, environmental science is an interdisciplinary academic field that assimilates physical, biological and information sciences(like biology, physics, chemistry, ecology, zoology, oceanology, mineralogy, limnology, soil science, geology, atmospheric science, and geodesy). In other words, it is an objective, unbiased pursuit of knowledge about the workings of the environment and our interactions with it.
You could probably look Historyworld.com they have a south american timeline that goes back all the way to 3000 bc.
C. Daily organizer would be the best