Which river was used as a major trade route for the midwestern united states?

Micah is studying child behavior in playgrounds throughout the world. he wants to see how the children react when teachers select the same child to be the first to use each piece of equipment. which approach is micah is using?

Should the u.s limit the number of terms a lawmaker can serve in congress

All living things share certain characteristics. which of the following characteristics is not shared by all living things?