What would be some benefits to starting these civilizations in the locations of the Tigris & Euphrates, Nile River, Yellow River, Indus River?

Explore the ways that boundaries influence identity, interaction and exchange. things to consider: what is the race/ethnicity. how easy is it to interact/trade with others.

What is meant by the term relative location?

Zac wanted to determine the measure of r and of ? r in the triangle below. to fine the measure of r, zac sets up the problem.42^2 + 24^2 = r 2. determine whether zac set the problem up correctly.