In south carolina, society became more divided after the arrival of large numbers of -spanish settlers
-english settlers
-scots-irish settlers
-french settlers

b) race riots in several cities

the answer would more than likely a.)falling crop prices  

hope the answer is right and ,either way have a nice day.

they change the constitution.

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.