How did the rivers of Mississippi affect the lives of First Nations people? They protected settlements from attack by outside tribes. They gave European traders easy access to native markets. They provided a source of food that contributed to population growth. They made it possible to generate water power that aided basket-weaving.

Suppose you are a freshmen in college and you have not declared a major. one reason you enrolled at your respective college was the school's vibrant social life. at the same time, you want to balance your academic life because you know that your grades will matter for graduate school or job applications.you decide to forgo partying for two hours to study for an upcoming economics exam. in your first semester's principles of economics class, you learn that the enjoyment you would have received from partying is an example of a(n)