Of the following people, the one that occupied the lowest rung on Hitler's racial hierarchy was the

The Jewish people, if that is not a choice then black people, not sure if Judaisism counts as a race.

3

Explanation:

Three important environmental factors were water,topography, and vegetation. Water The most important environmental factor in early human settlement was water. Physical features like rivers, lakes, and inland seas were good sources of fresh water. Water was important for many reasons.