Which of the following was considered lowest in the Indian caste system?
a. Brahmins
b. Sudras
c. Kshatriyas
d. Vaisyas

How did geography play a role in the classical Indian civilization, as compared to that of China?
a. India was more accessible to outsiders than China.
b. China adapted to outside cultures more often than India.
c. India was more closed off than China.
d. China benefited from the Himalayas because it acted as a barrier to the central cities.