Which civilizations started in the Ohio River Valley and eventually spread north throughout New England?

a.
Olmec and Maya

c.
Adena and Hopellells

b.
Toltec and Aztec

d.
Hohokam and Anasazi

How did the voting rights act and the 15th amendment combine to improve individual rights for african americans

Ahistorian has discovered a letter written by an early roman emperor. she translates the letter and discovers that it contains orders to a general before a battle. she works to determine when the letter was written to figure out which battle the letter references.the historian in the passage is most clearly demonstrating which historical thinking skill? a. identifying causes and historical contextb. thinking chronologicallyc. making and evaluating arguments and interpretationsd. analyzing historical sources

Explain how the principle of separation of powers is reflected in the