In the United States, which of the following would increase energy efficiency?

The spanish class system placed people in the top class primarily based upon how much american blood a person had. how much spanish blood a person had. where a person worked. whom a person married.

What is the southernmost fort in what is today western ohio? what city is there today

Describe the difference between absolute and relative chronologies. if you were describing a series of events in your life, how could you describe them in two ways?