3. How does this sentence from paragraph 5 contribute to the central ideas of the text: "The debate was especially ironic
because defenders of slavery relied on a central principle of
fairness."

cruel and illegal punishments

that would be the correct answer

the answer is a. the harappan civilisation is also called the indus valley civilisation, this is because they built their cities along the indus river. the reason behind this location can be found in the rest of the "old world" civilisations like mesopotamia or egypt, the first built their cities along the rivers tigris and euphrates, the second along the nil; : their respective civilisations thrived because the overflowing of their respective rivers produced favorable conditions for agriculture, their main support.