By about 1700 b. c.e., the residents of harappa and mohenjo-daro began to abandon their cities because
a) frequent epidemics made city living impossible.
b) deforestation of the indus river valley brought about ecological degradation.
c) the horse-riding aryans began to invade the cities.
d) the indus river dried up.
e) all these answers are correct.

Which situation would be considered an example of the freedom of association? a. three students write a letter to a local newspaper demanding that a teacher be fired. b. a group forms on a college campus to support a particular political candidate. c. an individual purchases a membership to a local gym. d. a religious organization buys several local lots in order to construct a new church building.