Our Constitution is known as the fundamental law of the land because it is superior to the ordinary laws enacted by the parliament or state legislature. A law which violates any provisions of the constitution shall be void or have no value.
It teaches about the history of things and that might be useful for a job
Buddhism spread across Asia through networks of overland and maritime routes between India, Southeast Asia, Central Asia, and China. The transmission of Buddhism to Central Asia and China corresponded with the development of the silk routes as channels for intercultural exchanges.
C because when people can't grow crops they need other ways to make money.