What do you know about the contributions of black Americans to U. S. society, and where does that information come from?

social act if im thinking of the right thing

explanation:

know it

i believe it was ccc - civilian conservation corps

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.