Unit 1: Road to Civilization. Unit 2: Eco Disasters. Unit 3: Identity. Unit 4: Look to the East. Unit 5: Earth on the Move. Unit 6: Beyond Boundaries. Unit 7: The Birth of Justice. Unit 8: A Job well DoneUnit 1: Road to Civilization. Unit 2: Eco Disasters. Unit 3: Identity. Unit 4: Look to the East. Unit 5: Earth on the Move. Unit 6: Beyond Boundaries. Unit 7: The Birth of Justice. Unit 8: A Job well Done