Hey this is just a test, i want to see how fast i can get an answer so that in the future i will know how long i have to wait to get an answer on any questions : ) if you see this, just leave an "answer" saying that you saw it. so much have a great day

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.

i don't understand.. what's the question you're asking here? ?