Map A: British India (1945), Map B India (1971). Which statement best explains the changes in borders shown between maps A and B? 1. Nationalism has been a unifying and dividing force in this region.
2. Invading neighbors have been a driving force in this region.
3. Marxism has been a dominant movement in this region.
4. National elections have been a determining factor in this region.

d is the right answer

is there a table of answers to choose from?

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.