The type of tectonic plate boundary that occurs when two plates are colliding into each other is known as

a)transform boundary
b)convergent boundary
c)divergent boundary
d)subduction zone

The caste system in india was used for what purpose? a) to ensure that all people had an adequate income b) to prevent the rich from taking too much power c) to provide social control and conformity according to one’s birth d) to draft a military capable of defending india from mongol invasion